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Finding the Fourth Proportional to 65,733.60, 98,600.40 and 39,424.80

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Solution

The fourth proportional to 65,733.60, 98,600.40 and 39,424.80 is: 59,137.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,733.60 : 98,600.40 = 39,424.80 : x
  2. Step 2: Convert to fraction form
    65,733.60/98,600.40 = 39,424.80/x
  3. Step 3: Cross multiply
    65,733.60x = 98,600.40 × 39,424.80
  4. Step 4: Simplify right side
    65,733.60x = 3,887,301,049.92
  5. Step 5: Solve for x
    x = 3,887,301,049.92/65,733.60
  6. Step 6: Final answer
    x = 59,137.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.