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Finding the Fourth Proportional to 56,543.70, 84,815.55 and 51,705.30

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Solution

The fourth proportional to 56,543.70, 84,815.55 and 51,705.30 is: 77,557.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,543.70 : 84,815.55 = 51,705.30 : x
  2. Step 2: Convert to fraction form
    56,543.70/84,815.55 = 51,705.30/x
  3. Step 3: Cross multiply
    56,543.70x = 84,815.55 × 51,705.30
  4. Step 4: Simplify right side
    56,543.70x = 4,385,413,457.42
  5. Step 5: Solve for x
    x = 4,385,413,457.42/56,543.70
  6. Step 6: Final answer
    x = 77,557.95

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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.