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Finding the Fourth Proportional to 65,773.52, 98,670.58 and 21,389.87

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Solution

The fourth proportional to 65,773.52, 98,670.58 and 21,389.87 is: 32,088.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,773.52 : 98,670.58 = 21,389.87 : x
  2. Step 2: Convert to fraction form
    65,773.52/98,670.58 = 21,389.87/x
  3. Step 3: Cross multiply
    65,773.52x = 98,670.58 × 21,389.87
  4. Step 4: Simplify right side
    65,773.52x = 2,110,551,132.39
  5. Step 5: Solve for x
    x = 2,110,551,132.39/65,773.52
  6. Step 6: Final answer
    x = 32,088.16

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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.