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Finding the Fourth Proportional to 73,479.28, 101,402.16 and 39,945.28

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Solution

The fourth proportional to 73,479.28, 101,402.16 and 39,945.28 is: 55,124.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,479.28 : 101,402.16 = 39,945.28 : x
  2. Step 2: Convert to fraction form
    73,479.28/101,402.16 = 39,945.28/x
  3. Step 3: Cross multiply
    73,479.28x = 101,402.16 × 39,945.28
  4. Step 4: Simplify right side
    73,479.28x = 4,050,537,673.80
  5. Step 5: Solve for x
    x = 4,050,537,673.80/73,479.28
  6. Step 6: Final answer
    x = 55,124.90

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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.