Home / 71,787.59-99,063.03-39,515.93

Finding the Fourth Proportional to 71,787.59, 99,063.03 and 39,515.93

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Solution

The fourth proportional to 71,787.59, 99,063.03 and 39,515.93 is: 54,529.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,787.59 : 99,063.03 = 39,515.93 : x
  2. Step 2: Convert to fraction form
    71,787.59/99,063.03 = 39,515.93/x
  3. Step 3: Cross multiply
    71,787.59x = 99,063.03 × 39,515.93
  4. Step 4: Simplify right side
    71,787.59x = 3,914,567,759.07
  5. Step 5: Solve for x
    x = 3,914,567,759.07/71,787.59
  6. Step 6: Final answer
    x = 54,529.87

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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.