Home / 89,877.90-134,865.45-39,965.70

Finding the Fourth Proportional to 89,877.90, 134,865.45 and 39,965.70

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Solution

The fourth proportional to 89,877.90, 134,865.45 and 39,965.70 is: 59,970.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,877.90 : 134,865.45 = 39,965.70 : x
  2. Step 2: Convert to fraction form
    89,877.90/134,865.45 = 39,965.70/x
  3. Step 3: Cross multiply
    89,877.90x = 134,865.45 × 39,965.70
  4. Step 4: Simplify right side
    89,877.90x = 5,389,992,115.07
  5. Step 5: Solve for x
    x = 5,389,992,115.07/89,877.90
  6. Step 6: Final answer
    x = 59,970.16

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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.