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Finding the Fourth Proportional to 93,122.80, 139,721.60 and 42,545.80

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Solution

The fourth proportional to 93,122.80, 139,721.60 and 42,545.80 is: 63,835.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,122.80 : 139,721.60 = 42,545.80 : x
  2. Step 2: Convert to fraction form
    93,122.80/139,721.60 = 42,545.80/x
  3. Step 3: Cross multiply
    93,122.80x = 139,721.60 × 42,545.80
  4. Step 4: Simplify right side
    93,122.80x = 5,944,567,249.28
  5. Step 5: Solve for x
    x = 5,944,567,249.28/93,122.80
  6. Step 6: Final answer
    x = 63,835.79

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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.