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Finding the Fourth Proportional to 65,312.32, 90,150.16 and 42,654.73

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Solution

The fourth proportional to 65,312.32, 90,150.16 and 42,654.73 is: 58,876.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,312.32 : 90,150.16 = 42,654.73 : x
  2. Step 2: Convert to fraction form
    65,312.32/90,150.16 = 42,654.73/x
  3. Step 3: Cross multiply
    65,312.32x = 90,150.16 × 42,654.73
  4. Step 4: Simplify right side
    65,312.32x = 3,845,330,734.26
  5. Step 5: Solve for x
    x = 3,845,330,734.26/65,312.32
  6. Step 6: Final answer
    x = 58,876.04

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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.