Home / 82,985.52-124,527.51-77,731.61

Finding the Fourth Proportional to 82,985.52, 124,527.51 and 77,731.61

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Solution

The fourth proportional to 82,985.52, 124,527.51 and 77,731.61 is: 116,643.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,985.52 : 124,527.51 = 77,731.61 : x
  2. Step 2: Convert to fraction form
    82,985.52/124,527.51 = 77,731.61/x
  3. Step 3: Cross multiply
    82,985.52x = 124,527.51 × 77,731.61
  4. Step 4: Simplify right side
    82,985.52x = 9,679,723,218.95
  5. Step 5: Solve for x
    x = 9,679,723,218.95/82,985.52
  6. Step 6: Final answer
    x = 116,643.52

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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.