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Finding the Fourth Proportional to 71,903.92, 99,406.76 and 53,967.78

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Solution

The fourth proportional to 71,903.92, 99,406.76 and 53,967.78 is: 74,610.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,903.92 : 99,406.76 = 53,967.78 : x
  2. Step 2: Convert to fraction form
    71,903.92/99,406.76 = 53,967.78/x
  3. Step 3: Cross multiply
    71,903.92x = 99,406.76 × 53,967.78
  4. Step 4: Simplify right side
    71,903.92x = 5,364,761,884.35
  5. Step 5: Solve for x
    x = 5,364,761,884.35/71,903.92
  6. Step 6: Final answer
    x = 74,610.15

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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.