Home / 71,645.38-107,551.10-38,430.32

Finding the Fourth Proportional to 71,645.38, 107,551.10 and 38,430.32

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Solution

The fourth proportional to 71,645.38, 107,551.10 and 38,430.32 is: 57,690.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,645.38 : 107,551.10 = 38,430.32 : x
  2. Step 2: Convert to fraction form
    71,645.38/107,551.10 = 38,430.32/x
  3. Step 3: Cross multiply
    71,645.38x = 107,551.10 × 38,430.32
  4. Step 4: Simplify right side
    71,645.38x = 4,133,223,189.35
  5. Step 5: Solve for x
    x = 4,133,223,189.35/71,645.38
  6. Step 6: Final answer
    x = 57,690.02

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1.5x scale

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.