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Finding the Fourth Proportional to 85,659.68, 118,207.35 and 47,420.88

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Solution

The fourth proportional to 85,659.68, 118,207.35 and 47,420.88 is: 65,439.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,659.68 : 118,207.35 = 47,420.88 : x
  2. Step 2: Convert to fraction form
    85,659.68/118,207.35 = 47,420.88/x
  3. Step 3: Cross multiply
    85,659.68x = 118,207.35 × 47,420.88
  4. Step 4: Simplify right side
    85,659.68x = 5,605,496,559.47
  5. Step 5: Solve for x
    x = 5,605,496,559.47/85,659.68
  6. Step 6: Final answer
    x = 65,439.15

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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.