Home / 71,789.28-107,420.58-59,913.72

Finding the Fourth Proportional to 71,789.28, 107,420.58 and 59,913.72

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Solution

The fourth proportional to 71,789.28, 107,420.58 and 59,913.72 is: 89,650.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,789.28 : 107,420.58 = 59,913.72 : x
  2. Step 2: Convert to fraction form
    71,789.28/107,420.58 = 59,913.72/x
  3. Step 3: Cross multiply
    71,789.28x = 107,420.58 × 59,913.72
  4. Step 4: Simplify right side
    71,789.28x = 6,435,966,552.36
  5. Step 5: Solve for x
    x = 6,435,966,552.36/71,789.28
  6. Step 6: Final answer
    x = 89,650.80

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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.