Home / 56,781.24-78,352.14-32,915.40

Finding the Fourth Proportional to 56,781.24, 78,352.14 and 32,915.40

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Solution

The fourth proportional to 56,781.24, 78,352.14 and 32,915.40 is: 45,419.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,781.24 : 78,352.14 = 32,915.40 : x
  2. Step 2: Convert to fraction form
    56,781.24/78,352.14 = 32,915.40/x
  3. Step 3: Cross multiply
    56,781.24x = 78,352.14 × 32,915.40
  4. Step 4: Simplify right side
    56,781.24x = 2,578,992,028.96
  5. Step 5: Solve for x
    x = 2,578,992,028.96/56,781.24
  6. Step 6: Final answer
    x = 45,419.79

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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.