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Finding the Fourth Proportional to 65,991.32, 98,986.98 and 30,442.12

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Solution

The fourth proportional to 65,991.32, 98,986.98 and 30,442.12 is: 45,663.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,991.32 : 98,986.98 = 30,442.12 : x
  2. Step 2: Convert to fraction form
    65,991.32/98,986.98 = 30,442.12/x
  3. Step 3: Cross multiply
    65,991.32x = 98,986.98 × 30,442.12
  4. Step 4: Simplify right side
    65,991.32x = 3,013,373,161.97
  5. Step 5: Solve for x
    x = 3,013,373,161.97/65,991.32
  6. Step 6: Final answer
    x = 45,663.18

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1.5x scale

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.