Home / 71,823.71-99,115.80-39,557.72

Finding the Fourth Proportional to 71,823.71, 99,115.80 and 39,557.72

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Solution

The fourth proportional to 71,823.71, 99,115.80 and 39,557.72 is: 54,589.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,823.71 : 99,115.80 = 39,557.72 : x
  2. Step 2: Convert to fraction form
    71,823.71/99,115.80 = 39,557.72/x
  3. Step 3: Cross multiply
    71,823.71x = 99,115.80 × 39,557.72
  4. Step 4: Simplify right side
    71,823.71x = 3,920,794,828.41
  5. Step 5: Solve for x
    x = 3,920,794,828.41/71,823.71
  6. Step 6: Final answer
    x = 54,589.14

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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.