Home / 42,872.25-64,318.10-15,170.25

Finding the Fourth Proportional to 42,872.25, 64,318.10 and 15,170.25

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Solution

The fourth proportional to 42,872.25, 64,318.10 and 15,170.25 is: 22,758.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,872.25 : 64,318.10 = 15,170.25 : x
  2. Step 2: Convert to fraction form
    42,872.25/64,318.10 = 15,170.25/x
  3. Step 3: Cross multiply
    42,872.25x = 64,318.10 × 15,170.25
  4. Step 4: Simplify right side
    42,872.25x = 975,721,656.53
  5. Step 5: Solve for x
    x = 975,721,656.53/42,872.25
  6. Step 6: Final answer
    x = 22,758.82

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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.