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Finding the Fourth Proportional to 56,272.88, 84,425.70 and 20,737.76

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Solution

The fourth proportional to 56,272.88, 84,425.70 and 20,737.76 is: 31,112.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,272.88 : 84,425.70 = 20,737.76 : x
  2. Step 2: Convert to fraction form
    56,272.88/84,425.70 = 20,737.76/x
  3. Step 3: Cross multiply
    56,272.88x = 84,425.70 × 20,737.76
  4. Step 4: Simplify right side
    56,272.88x = 1,750,799,904.43
  5. Step 5: Solve for x
    x = 1,750,799,904.43/56,272.88
  6. Step 6: Final answer
    x = 31,112.68

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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.