Home / 90,690,978,412.80-135,936,698,428.80-31,772,736,518.40

Finding the Fourth Proportional to 90,690,978,412.80, 135,936,698,428.80 and 31,772,736,518.40

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Solution

The fourth proportional to 90,690,978,412.80, 135,936,698,428.80 and 31,772,736,518.40 is: 47,624,151,574.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,690,978,412.80 : 135,936,698,428.80 = 31,772,736,518.40 : x
  2. Step 2: Convert to fraction form
    90,690,978,412.80/135,936,698,428.80 = 31,772,736,518.40/x
  3. Step 3: Cross multiply
    90,690,978,412.80x = 135,936,698,428.80 × 31,772,736,518.40
  4. Step 4: Simplify right side
    90,690,978,412.80x = 4,319,080,902,359,462,182,912
  5. Step 5: Solve for x
    x = 4,319,080,902,359,462,182,912/90,690,978,412.80
  6. Step 6: Final answer
    x = 47,624,151,574.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.