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Finding the Fourth Proportional to 56,165.61, 77,539.67 and 38,286.88

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Solution

The fourth proportional to 56,165.61, 77,539.67 and 38,286.88 is: 52,857.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,165.61 : 77,539.67 = 38,286.88 : x
  2. Step 2: Convert to fraction form
    56,165.61/77,539.67 = 38,286.88/x
  3. Step 3: Cross multiply
    56,165.61x = 77,539.67 × 38,286.88
  4. Step 4: Simplify right side
    56,165.61x = 2,968,752,040.53
  5. Step 5: Solve for x
    x = 2,968,752,040.53/56,165.61
  6. Step 6: Final answer
    x = 52,857.11

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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.