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Finding the Fourth Proportional to 55,463.76, 76,531.14 and 31,590.90

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Solution

The fourth proportional to 55,463.76, 76,531.14 and 31,590.90 is: 43,590.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,463.76 : 76,531.14 = 31,590.90 : x
  2. Step 2: Convert to fraction form
    55,463.76/76,531.14 = 31,590.90/x
  3. Step 3: Cross multiply
    55,463.76x = 76,531.14 × 31,590.90
  4. Step 4: Simplify right side
    55,463.76x = 2,417,687,590.63
  5. Step 5: Solve for x
    x = 2,417,687,590.63/55,463.76
  6. Step 6: Final answer
    x = 43,590.40

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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.