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Finding the Fourth Proportional to 56,948.30, 85,422.45 and 54,356.30

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Solution

The fourth proportional to 56,948.30, 85,422.45 and 54,356.30 is: 81,534.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,948.30 : 85,422.45 = 54,356.30 : x
  2. Step 2: Convert to fraction form
    56,948.30/85,422.45 = 54,356.30/x
  3. Step 3: Cross multiply
    56,948.30x = 85,422.45 × 54,356.30
  4. Step 4: Simplify right side
    56,948.30x = 4,643,248,318.94
  5. Step 5: Solve for x
    x = 4,643,248,318.94/56,948.30
  6. Step 6: Final answer
    x = 81,534.45

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1.5x scale

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.