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Finding the Fourth Proportional to 71,730.68, 99,059.32 and 59,108.92

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Solution

The fourth proportional to 71,730.68, 99,059.32 and 59,108.92 is: 81,628.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,730.68 : 99,059.32 = 59,108.92 : x
  2. Step 2: Convert to fraction form
    71,730.68/99,059.32 = 59,108.92/x
  3. Step 3: Cross multiply
    71,730.68x = 99,059.32 × 59,108.92
  4. Step 4: Simplify right side
    71,730.68x = 5,855,289,421.13
  5. Step 5: Solve for x
    x = 5,855,289,421.13/71,730.68
  6. Step 6: Final answer
    x = 81,628.80

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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.