Home / 85,213,905.20-127,820,857.80-52,902,292.40

Finding the Fourth Proportional to 85,213,905.20, 127,820,857.80 and 52,902,292.40

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Solution

The fourth proportional to 85,213,905.20, 127,820,857.80 and 52,902,292.40 is: 79,353,438.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,213,905.20 : 127,820,857.80 = 52,902,292.40 : x
  2. Step 2: Convert to fraction form
    85,213,905.20/127,820,857.80 = 52,902,292.40/x
  3. Step 3: Cross multiply
    85,213,905.20x = 127,820,857.80 × 52,902,292.40
  4. Step 4: Simplify right side
    85,213,905.20x = 6,762,016,394,154,420
  5. Step 5: Solve for x
    x = 6,762,016,394,154,420/85,213,905.20
  6. Step 6: Final answer
    x = 79,353,438.60

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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.