Home / 65,619.64-90,543.18-38,766.52

Finding the Fourth Proportional to 65,619.64, 90,543.18 and 38,766.52

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Solution

The fourth proportional to 65,619.64, 90,543.18 and 38,766.52 is: 53,490.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,619.64 : 90,543.18 = 38,766.52 : x
  2. Step 2: Convert to fraction form
    65,619.64/90,543.18 = 38,766.52/x
  3. Step 3: Cross multiply
    65,619.64x = 90,543.18 × 38,766.52
  4. Step 4: Simplify right side
    65,619.64x = 3,510,043,998.33
  5. Step 5: Solve for x
    x = 3,510,043,998.33/65,619.64
  6. Step 6: Final answer
    x = 53,490.75

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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.