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Finding the Fourth Proportional to 65,287.40, 90,049.95 and 59,926.86

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Solution

The fourth proportional to 65,287.40, 90,049.95 and 59,926.86 is: 82,656.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,287.40 : 90,049.95 = 59,926.86 : x
  2. Step 2: Convert to fraction form
    65,287.40/90,049.95 = 59,926.86/x
  3. Step 3: Cross multiply
    65,287.40x = 90,049.95 × 59,926.86
  4. Step 4: Simplify right side
    65,287.40x = 5,396,410,746.66
  5. Step 5: Solve for x
    x = 5,396,410,746.66/65,287.40
  6. Step 6: Final answer
    x = 82,656.24

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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.