Home / 78,948.41-117,407.24-76,456.64

Finding the Fourth Proportional to 78,948.41, 117,407.24 and 76,456.64

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Solution

The fourth proportional to 78,948.41, 117,407.24 and 76,456.64 is: 113,701.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,948.41 : 117,407.24 = 76,456.64 : x
  2. Step 2: Convert to fraction form
    78,948.41/117,407.24 = 76,456.64/x
  3. Step 3: Cross multiply
    78,948.41x = 117,407.24 × 76,456.64
  4. Step 4: Simplify right side
    78,948.41x = 8,976,563,280.02
  5. Step 5: Solve for x
    x = 8,976,563,280.02/78,948.41
  6. Step 6: Final answer
    x = 113,701.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.