Home / 65,691.12-98,551.08-21,322.32

Finding the Fourth Proportional to 65,691.12, 98,551.08 and 21,322.32

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Solution

The fourth proportional to 65,691.12, 98,551.08 and 21,322.32 is: 31,988.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,691.12 : 98,551.08 = 21,322.32 : x
  2. Step 2: Convert to fraction form
    65,691.12/98,551.08 = 21,322.32/x
  3. Step 3: Cross multiply
    65,691.12x = 98,551.08 × 21,322.32
  4. Step 4: Simplify right side
    65,691.12x = 2,101,337,664.11
  5. Step 5: Solve for x
    x = 2,101,337,664.11/65,691.12
  6. Step 6: Final answer
    x = 31,988.15

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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.