Home / 74,740.71-103,141.38-40,749.12

Finding the Fourth Proportional to 74,740.71, 103,141.38 and 40,749.12

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Solution

The fourth proportional to 74,740.71, 103,141.38 and 40,749.12 is: 56,233.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,740.71 : 103,141.38 = 40,749.12 : x
  2. Step 2: Convert to fraction form
    74,740.71/103,141.38 = 40,749.12/x
  3. Step 3: Cross multiply
    74,740.71x = 103,141.38 × 40,749.12
  4. Step 4: Simplify right side
    74,740.71x = 4,202,920,470.59
  5. Step 5: Solve for x
    x = 4,202,920,470.59/74,740.71
  6. Step 6: Final answer
    x = 56,233.35

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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.