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Finding the Fourth Proportional to 72,645.23, 108,332.17 and 71,980.92

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Solution

The fourth proportional to 72,645.23, 108,332.17 and 71,980.92 is: 107,341.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,645.23 : 108,332.17 = 71,980.92 : x
  2. Step 2: Convert to fraction form
    72,645.23/108,332.17 = 71,980.92/x
  3. Step 3: Cross multiply
    72,645.23x = 108,332.17 × 71,980.92
  4. Step 4: Simplify right side
    72,645.23x = 7,797,849,082.24
  5. Step 5: Solve for x
    x = 7,797,849,082.24/72,645.23
  6. Step 6: Final answer
    x = 107,341.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.