Home / 99,720.27-137,611.56-57,281.53

Finding the Fourth Proportional to 99,720.27, 137,611.56 and 57,281.53

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Solution

The fourth proportional to 99,720.27, 137,611.56 and 57,281.53 is: 79,047.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,720.27 : 137,611.56 = 57,281.53 : x
  2. Step 2: Convert to fraction form
    99,720.27/137,611.56 = 57,281.53/x
  3. Step 3: Cross multiply
    99,720.27x = 137,611.56 × 57,281.53
  4. Step 4: Simplify right side
    99,720.27x = 7,882,600,702.49
  5. Step 5: Solve for x
    x = 7,882,600,702.49/99,720.27
  6. Step 6: Final answer
    x = 79,047.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.