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Finding the Fourth Proportional to 56,287.61, 84,320.45 and 45,769.50

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Solution

The fourth proportional to 56,287.61, 84,320.45 and 45,769.50 is: 68,564.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,287.61 : 84,320.45 = 45,769.50 : x
  2. Step 2: Convert to fraction form
    56,287.61/84,320.45 = 45,769.50/x
  3. Step 3: Cross multiply
    56,287.61x = 84,320.45 × 45,769.50
  4. Step 4: Simplify right side
    56,287.61x = 3,859,304,607.43
  5. Step 5: Solve for x
    x = 3,859,304,607.43/56,287.61
  6. Step 6: Final answer
    x = 68,564.02

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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.