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Finding the Fourth Proportional to 55,065.61, 75,990.54 and 29,915.11

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Solution

The fourth proportional to 55,065.61, 75,990.54 and 29,915.11 is: 41,282.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,065.61 : 75,990.54 = 29,915.11 : x
  2. Step 2: Convert to fraction form
    55,065.61/75,990.54 = 29,915.11/x
  3. Step 3: Cross multiply
    55,065.61x = 75,990.54 × 29,915.11
  4. Step 4: Simplify right side
    55,065.61x = 2,273,265,363.06
  5. Step 5: Solve for x
    x = 2,273,265,363.06/55,065.61
  6. Step 6: Final answer
    x = 41,282.85

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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.