Home / 91,721.80-137,582.70-36,317.80

Finding the Fourth Proportional to 91,721.80, 137,582.70 and 36,317.80

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Solution

The fourth proportional to 91,721.80, 137,582.70 and 36,317.80 is: 54,476.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,721.80 : 137,582.70 = 36,317.80 : x
  2. Step 2: Convert to fraction form
    91,721.80/137,582.70 = 36,317.80/x
  3. Step 3: Cross multiply
    91,721.80x = 137,582.70 × 36,317.80
  4. Step 4: Simplify right side
    91,721.80x = 4,996,700,982.06
  5. Step 5: Solve for x
    x = 4,996,700,982.06/91,721.80
  6. Step 6: Final answer
    x = 54,476.70

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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.