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Finding the Fourth Proportional to 86,037.69, 118,728.15 and 47,799.90

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Solution

The fourth proportional to 86,037.69, 118,728.15 and 47,799.90 is: 65,961.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,037.69 : 118,728.15 = 47,799.90 : x
  2. Step 2: Convert to fraction form
    86,037.69/118,728.15 = 47,799.90/x
  3. Step 3: Cross multiply
    86,037.69x = 118,728.15 × 47,799.90
  4. Step 4: Simplify right side
    86,037.69x = 5,675,193,697.19
  5. Step 5: Solve for x
    x = 5,675,193,697.19/86,037.69
  6. Step 6: Final answer
    x = 65,961.72

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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.