Home / 81,024.30-121,536.45-51,572.70

Finding the Fourth Proportional to 81,024.30, 121,536.45 and 51,572.70

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Solution

The fourth proportional to 81,024.30, 121,536.45 and 51,572.70 is: 77,359.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,024.30 : 121,536.45 = 51,572.70 : x
  2. Step 2: Convert to fraction form
    81,024.30/121,536.45 = 51,572.70/x
  3. Step 3: Cross multiply
    81,024.30x = 121,536.45 × 51,572.70
  4. Step 4: Simplify right side
    81,024.30x = 6,267,962,874.92
  5. Step 5: Solve for x
    x = 6,267,962,874.92/81,024.30
  6. Step 6: Final answer
    x = 77,359.05

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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.