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Finding the Fourth Proportional to 56,957.40, 85,436.10 and 54,235.80

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Solution

The fourth proportional to 56,957.40, 85,436.10 and 54,235.80 is: 81,353.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,957.40 : 85,436.10 = 54,235.80 : x
  2. Step 2: Convert to fraction form
    56,957.40/85,436.10 = 54,235.80/x
  3. Step 3: Cross multiply
    56,957.40x = 85,436.10 × 54,235.80
  4. Step 4: Simplify right side
    56,957.40x = 4,633,695,232.38
  5. Step 5: Solve for x
    x = 4,633,695,232.38/56,957.40
  6. Step 6: Final answer
    x = 81,353.70

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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.