Home / 78,154.32-117,041.40-36,613.20

Finding the Fourth Proportional to 78,154.32, 117,041.40 and 36,613.20

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Solution

The fourth proportional to 78,154.32, 117,041.40 and 36,613.20 is: 54,830.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,154.32 : 117,041.40 = 36,613.20 : x
  2. Step 2: Convert to fraction form
    78,154.32/117,041.40 = 36,613.20/x
  3. Step 3: Cross multiply
    78,154.32x = 117,041.40 × 36,613.20
  4. Step 4: Simplify right side
    78,154.32x = 4,285,260,186.48
  5. Step 5: Solve for x
    x = 4,285,260,186.48/78,154.32
  6. Step 6: Final answer
    x = 54,830.75

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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.