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Finding the Fourth Proportional to 61,630.88, 85,064.56 and 51,541.76

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Solution

The fourth proportional to 61,630.88, 85,064.56 and 51,541.76 is: 71,139.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,630.88 : 85,064.56 = 51,541.76 : x
  2. Step 2: Convert to fraction form
    61,630.88/85,064.56 = 51,541.76/x
  3. Step 3: Cross multiply
    61,630.88x = 85,064.56 × 51,541.76
  4. Step 4: Simplify right side
    61,630.88x = 4,384,377,136.03
  5. Step 5: Solve for x
    x = 4,384,377,136.03/61,630.88
  6. Step 6: Final answer
    x = 71,139.29

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1.5x scale

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.