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Finding the Fourth Proportional to 61,981.61, 85,531.34 and 35,124.44

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Solution

The fourth proportional to 61,981.61, 85,531.34 and 35,124.44 is: 48,469.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,981.61 : 85,531.34 = 35,124.44 : x
  2. Step 2: Convert to fraction form
    61,981.61/85,531.34 = 35,124.44/x
  3. Step 3: Cross multiply
    61,981.61x = 85,531.34 × 35,124.44
  4. Step 4: Simplify right side
    61,981.61x = 3,004,240,080.10
  5. Step 5: Solve for x
    x = 3,004,240,080.10/61,981.61
  6. Step 6: Final answer
    x = 48,469.87

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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.