Home / 81,701.22-122,489.60-42,233.16

Finding the Fourth Proportional to 81,701.22, 122,489.60 and 42,233.16

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Solution

The fourth proportional to 81,701.22, 122,489.60 and 42,233.16 is: 63,317.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,701.22 : 122,489.60 = 42,233.16 : x
  2. Step 2: Convert to fraction form
    81,701.22/122,489.60 = 42,233.16/x
  3. Step 3: Cross multiply
    81,701.22x = 122,489.60 × 42,233.16
  4. Step 4: Simplify right side
    81,701.22x = 5,173,122,875.14
  5. Step 5: Solve for x
    x = 5,173,122,875.14/81,701.22
  6. Step 6: Final answer
    x = 63,317.57

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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.