Home / 56,915.13-85,376.82-21,854.78

Finding the Fourth Proportional to 56,915.13, 85,376.82 and 21,854.78

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Solution

The fourth proportional to 56,915.13, 85,376.82 and 21,854.78 is: 32,783.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,915.13 : 85,376.82 = 21,854.78 : x
  2. Step 2: Convert to fraction form
    56,915.13/85,376.82 = 21,854.78/x
  3. Step 3: Cross multiply
    56,915.13x = 85,376.82 × 21,854.78
  4. Step 4: Simplify right side
    56,915.13x = 1,865,891,618.20
  5. Step 5: Solve for x
    x = 1,865,891,618.20/56,915.13
  6. Step 6: Final answer
    x = 32,783.75

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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.