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Finding the Fourth Proportional to 45,275.53, 67,926.26 and 21,915.13

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Solution

The fourth proportional to 45,275.53, 67,926.26 and 21,915.13 is: 32,878.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,275.53 : 67,926.26 = 21,915.13 : x
  2. Step 2: Convert to fraction form
    45,275.53/67,926.26 = 21,915.13/x
  3. Step 3: Cross multiply
    45,275.53x = 67,926.26 × 21,915.13
  4. Step 4: Simplify right side
    45,275.53x = 1,488,612,818.31
  5. Step 5: Solve for x
    x = 1,488,612,818.31/45,275.53
  6. Step 6: Final answer
    x = 32,878.97

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1.5x scale

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.