Home / 90,691.60-125,070.70-56,689.24

Finding the Fourth Proportional to 90,691.60, 125,070.70 and 56,689.24

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Solution

The fourth proportional to 90,691.60, 125,070.70 and 56,689.24 is: 78,178.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,691.60 : 125,070.70 = 56,689.24 : x
  2. Step 2: Convert to fraction form
    90,691.60/125,070.70 = 56,689.24/x
  3. Step 3: Cross multiply
    90,691.60x = 125,070.70 × 56,689.24
  4. Step 4: Simplify right side
    90,691.60x = 7,090,162,929.27
  5. Step 5: Solve for x
    x = 7,090,162,929.27/90,691.60
  6. Step 6: Final answer
    x = 78,178.83

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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.