Home / 74,688.78-103,001.28-54,513.71

Finding the Fourth Proportional to 74,688.78, 103,001.28 and 54,513.71

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Solution

The fourth proportional to 74,688.78, 103,001.28 and 54,513.71 is: 75,178.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,688.78 : 103,001.28 = 54,513.71 : x
  2. Step 2: Convert to fraction form
    74,688.78/103,001.28 = 54,513.71/x
  3. Step 3: Cross multiply
    74,688.78x = 103,001.28 × 54,513.71
  4. Step 4: Simplify right side
    74,688.78x = 5,614,981,392.54
  5. Step 5: Solve for x
    x = 5,614,981,392.54/74,688.78
  6. Step 6: Final answer
    x = 75,178.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.