Home / 81,330.17-112,235.63-45,520.20

Finding the Fourth Proportional to 81,330.17, 112,235.63 and 45,520.20

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Solution

The fourth proportional to 81,330.17, 112,235.63 and 45,520.20 is: 62,817.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,330.17 : 112,235.63 = 45,520.20 : x
  2. Step 2: Convert to fraction form
    81,330.17/112,235.63 = 45,520.20/x
  3. Step 3: Cross multiply
    81,330.17x = 112,235.63 × 45,520.20
  4. Step 4: Simplify right side
    81,330.17x = 5,108,988,097.13
  5. Step 5: Solve for x
    x = 5,108,988,097.13/81,330.17
  6. Step 6: Final answer
    x = 62,817.87

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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.