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Finding the Fourth Proportional to 91,106.51, 125,737.92 and 53,380.76

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Solution

The fourth proportional to 91,106.51, 125,737.92 and 53,380.76 is: 73,671.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,106.51 : 125,737.92 = 53,380.76 : x
  2. Step 2: Convert to fraction form
    91,106.51/125,737.92 = 53,380.76/x
  3. Step 3: Cross multiply
    91,106.51x = 125,737.92 × 53,380.76
  4. Step 4: Simplify right side
    91,106.51x = 6,711,985,101.73
  5. Step 5: Solve for x
    x = 6,711,985,101.73/91,106.51
  6. Step 6: Final answer
    x = 73,671.85

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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.