Home / 78,560.74-117,841.12-64,680.58

Finding the Fourth Proportional to 78,560.74, 117,841.12 and 64,680.58

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Solution

The fourth proportional to 78,560.74, 117,841.12 and 64,680.58 is: 97,020.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,560.74 : 117,841.12 = 64,680.58 : x
  2. Step 2: Convert to fraction form
    78,560.74/117,841.12 = 64,680.58/x
  3. Step 3: Cross multiply
    78,560.74x = 117,841.12 × 64,680.58
  4. Step 4: Simplify right side
    78,560.74x = 7,622,031,989.45
  5. Step 5: Solve for x
    x = 7,622,031,989.45/78,560.74
  6. Step 6: Final answer
    x = 97,020.88

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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.