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Finding the Fourth Proportional to 75,314.40, 112,990.80 and 53,170.92

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Solution

The fourth proportional to 75,314.40, 112,990.80 and 53,170.92 is: 79,769.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,314.40 : 112,990.80 = 53,170.92 : x
  2. Step 2: Convert to fraction form
    75,314.40/112,990.80 = 53,170.92/x
  3. Step 3: Cross multiply
    75,314.40x = 112,990.80 × 53,170.92
  4. Step 4: Simplify right side
    75,314.40x = 6,007,824,787.54
  5. Step 5: Solve for x
    x = 6,007,824,787.54/75,314.40
  6. Step 6: Final answer
    x = 79,769.93

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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.