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Finding the Fourth Proportional to 40,959.60, 56,488.92 and 31,993.20

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Solution

The fourth proportional to 40,959.60, 56,488.92 and 31,993.20 is: 44,123.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,959.60 : 56,488.92 = 31,993.20 : x
  2. Step 2: Convert to fraction form
    40,959.60/56,488.92 = 31,993.20/x
  3. Step 3: Cross multiply
    40,959.60x = 56,488.92 × 31,993.20
  4. Step 4: Simplify right side
    40,959.60x = 1,807,261,315.34
  5. Step 5: Solve for x
    x = 1,807,261,315.34/40,959.60
  6. Step 6: Final answer
    x = 44,123.02

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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.