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Finding the Fourth Proportional to 72,301.92, 99,762.46 and 45,428.84

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Solution

The fourth proportional to 72,301.92, 99,762.46 and 45,428.84 is: 62,682.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,301.92 : 99,762.46 = 45,428.84 : x
  2. Step 2: Convert to fraction form
    72,301.92/99,762.46 = 45,428.84/x
  3. Step 3: Cross multiply
    72,301.92x = 99,762.46 × 45,428.84
  4. Step 4: Simplify right side
    72,301.92x = 4,532,092,833.35
  5. Step 5: Solve for x
    x = 4,532,092,833.35/72,301.92
  6. Step 6: Final answer
    x = 62,682.88

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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.