Home / 91,681.13-137,575.30-38,368.65

Finding the Fourth Proportional to 91,681.13, 137,575.30 and 38,368.65

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Solution

The fourth proportional to 91,681.13, 137,575.30 and 38,368.65 is: 57,575.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,681.13 : 137,575.30 = 38,368.65 : x
  2. Step 2: Convert to fraction form
    91,681.13/137,575.30 = 38,368.65/x
  3. Step 3: Cross multiply
    91,681.13x = 137,575.30 × 38,368.65
  4. Step 4: Simplify right side
    91,681.13x = 5,278,578,534.35
  5. Step 5: Solve for x
    x = 5,278,578,534.35/91,681.13
  6. Step 6: Final answer
    x = 57,575.41

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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.