Home / 78,575.10-108,159.78-68,486.02

Finding the Fourth Proportional to 78,575.10, 108,159.78 and 68,486.02

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Solution

The fourth proportional to 78,575.10, 108,159.78 and 68,486.02 is: 94,272.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,575.10 : 108,159.78 = 68,486.02 : x
  2. Step 2: Convert to fraction form
    78,575.10/108,159.78 = 68,486.02/x
  3. Step 3: Cross multiply
    78,575.10x = 108,159.78 × 68,486.02
  4. Step 4: Simplify right side
    78,575.10x = 7,407,432,856.28
  5. Step 5: Solve for x
    x = 7,407,432,856.28/78,575.10
  6. Step 6: Final answer
    x = 94,272.01

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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.