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Finding the Fourth Proportional to 92,915.85, 128,219.43 and 52,628.61

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Solution

The fourth proportional to 92,915.85, 128,219.43 and 52,628.61 is: 72,624.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,915.85 : 128,219.43 = 52,628.61 : x
  2. Step 2: Convert to fraction form
    92,915.85/128,219.43 = 52,628.61/x
  3. Step 3: Cross multiply
    92,915.85x = 128,219.43 × 52,628.61
  4. Step 4: Simplify right side
    92,915.85x = 6,748,010,375.89
  5. Step 5: Solve for x
    x = 6,748,010,375.89/92,915.85
  6. Step 6: Final answer
    x = 72,624.97

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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.