Home / 91,988.64-138,036.15-38,676.42

Finding the Fourth Proportional to 91,988.64, 138,036.15 and 38,676.42

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Solution

The fourth proportional to 91,988.64, 138,036.15 and 38,676.42 is: 58,036.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,988.64 : 138,036.15 = 38,676.42 : x
  2. Step 2: Convert to fraction form
    91,988.64/138,036.15 = 38,676.42/x
  3. Step 3: Cross multiply
    91,988.64x = 138,036.15 × 38,676.42
  4. Step 4: Simplify right side
    91,988.64x = 5,338,744,112.58
  5. Step 5: Solve for x
    x = 5,338,744,112.58/91,988.64
  6. Step 6: Final answer
    x = 58,036.99

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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.