Home / 78,497.36-117,662.16-57,098.78

Finding the Fourth Proportional to 78,497.36, 117,662.16 and 57,098.78

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Solution

The fourth proportional to 78,497.36, 117,662.16 and 57,098.78 is: 85,587.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,497.36 : 117,662.16 = 57,098.78 : x
  2. Step 2: Convert to fraction form
    78,497.36/117,662.16 = 57,098.78/x
  3. Step 3: Cross multiply
    78,497.36x = 117,662.16 × 57,098.78
  4. Step 4: Simplify right side
    78,497.36x = 6,718,365,788.16
  5. Step 5: Solve for x
    x = 6,718,365,788.16/78,497.36
  6. Step 6: Final answer
    x = 85,587.16

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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.