Home / 91,855.85-137,836.94-38,543.06

Finding the Fourth Proportional to 91,855.85, 137,836.94 and 38,543.06

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Solution

The fourth proportional to 91,855.85, 137,836.94 and 38,543.06 is: 57,836.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,855.85 : 137,836.94 = 38,543.06 : x
  2. Step 2: Convert to fraction form
    91,855.85/137,836.94 = 38,543.06/x
  3. Step 3: Cross multiply
    91,855.85x = 137,836.94 × 38,543.06
  4. Step 4: Simplify right side
    91,855.85x = 5,312,657,600.51
  5. Step 5: Solve for x
    x = 5,312,657,600.51/91,855.85
  6. Step 6: Final answer
    x = 57,836.90

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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.