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Finding the Fourth Proportional to 85,608.34, 128,430.02 and 29,441.14

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Solution

The fourth proportional to 85,608.34, 128,430.02 and 29,441.14 is: 44,167.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,608.34 : 128,430.02 = 29,441.14 : x
  2. Step 2: Convert to fraction form
    85,608.34/128,430.02 = 29,441.14/x
  3. Step 3: Cross multiply
    85,608.34x = 128,430.02 × 29,441.14
  4. Step 4: Simplify right side
    85,608.34x = 3,781,125,951.55
  5. Step 5: Solve for x
    x = 3,781,125,951.55/85,608.34
  6. Step 6: Final answer
    x = 44,167.73

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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.