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Finding the Fourth Proportional to 61,285.82, 84,605.92 and 42,390.14

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Solution

The fourth proportional to 61,285.82, 84,605.92 and 42,390.14 is: 58,520.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,285.82 : 84,605.92 = 42,390.14 : x
  2. Step 2: Convert to fraction form
    61,285.82/84,605.92 = 42,390.14/x
  3. Step 3: Cross multiply
    61,285.82x = 84,605.92 × 42,390.14
  4. Step 4: Simplify right side
    61,285.82x = 3,586,456,264.62
  5. Step 5: Solve for x
    x = 3,586,456,264.62/61,285.82
  6. Step 6: Final answer
    x = 58,520.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.