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Finding the Fourth Proportional to 52,543.40, 78,822.30 and 17,479.40

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Solution

The fourth proportional to 52,543.40, 78,822.30 and 17,479.40 is: 26,221.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,543.40 : 78,822.30 = 17,479.40 : x
  2. Step 2: Convert to fraction form
    52,543.40/78,822.30 = 17,479.40/x
  3. Step 3: Cross multiply
    52,543.40x = 78,822.30 × 17,479.40
  4. Step 4: Simplify right side
    52,543.40x = 1,377,766,510.62
  5. Step 5: Solve for x
    x = 1,377,766,510.62/52,543.40
  6. Step 6: Final answer
    x = 26,221.50

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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.