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Finding the Fourth Proportional to 65,599.12, 98,435.12 and 40,652.72

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Solution

The fourth proportional to 65,599.12, 98,435.12 and 40,652.72 is: 61,001.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,599.12 : 98,435.12 = 40,652.72 : x
  2. Step 2: Convert to fraction form
    65,599.12/98,435.12 = 40,652.72/x
  3. Step 3: Cross multiply
    65,599.12x = 98,435.12 × 40,652.72
  4. Step 4: Simplify right side
    65,599.12x = 4,001,655,371.53
  5. Step 5: Solve for x
    x = 4,001,655,371.53/65,599.12
  6. Step 6: Final answer
    x = 61,001.66

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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.