Home / 75,916,941.40-113,875,412.10-72,389,747.80

Finding the Fourth Proportional to 75,916,941.40, 113,875,412.10 and 72,389,747.80

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Solution

The fourth proportional to 75,916,941.40, 113,875,412.10 and 72,389,747.80 is: 108,584,621.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,916,941.40 : 113,875,412.10 = 72,389,747.80 : x
  2. Step 2: Convert to fraction form
    75,916,941.40/113,875,412.10 = 72,389,747.80/x
  3. Step 3: Cross multiply
    75,916,941.40x = 113,875,412.10 × 72,389,747.80
  4. Step 4: Simplify right side
    75,916,941.40x = 8,243,412,362,540,068
  5. Step 5: Solve for x
    x = 8,243,412,362,540,068/75,916,941.40
  6. Step 6: Final answer
    x = 108,584,621.70

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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.