Home / 88,418.12-121,968.60-61,518.02

Finding the Fourth Proportional to 88,418.12, 121,968.60 and 61,518.02

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Solution

The fourth proportional to 88,418.12, 121,968.60 and 61,518.02 is: 84,861.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,418.12 : 121,968.60 = 61,518.02 : x
  2. Step 2: Convert to fraction form
    88,418.12/121,968.60 = 61,518.02/x
  3. Step 3: Cross multiply
    88,418.12x = 121,968.60 × 61,518.02
  4. Step 4: Simplify right side
    88,418.12x = 7,503,266,774.17
  5. Step 5: Solve for x
    x = 7,503,266,774.17/88,418.12
  6. Step 6: Final answer
    x = 84,861.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.