Home / 82,702.20-124,053.30-51,209.40

Finding the Fourth Proportional to 82,702.20, 124,053.30 and 51,209.40

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Solution

The fourth proportional to 82,702.20, 124,053.30 and 51,209.40 is: 76,814.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,702.20 : 124,053.30 = 51,209.40 : x
  2. Step 2: Convert to fraction form
    82,702.20/124,053.30 = 51,209.40/x
  3. Step 3: Cross multiply
    82,702.20x = 124,053.30 × 51,209.40
  4. Step 4: Simplify right side
    82,702.20x = 6,352,695,061.02
  5. Step 5: Solve for x
    x = 6,352,695,061.02/82,702.20
  6. Step 6: Final answer
    x = 76,814.10

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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.