Home / 78,347.20-117,508.62-25,756.30

Finding the Fourth Proportional to 78,347.20, 117,508.62 and 25,756.30

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Solution

The fourth proportional to 78,347.20, 117,508.62 and 25,756.30 is: 38,630.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,347.20 : 117,508.62 = 25,756.30 : x
  2. Step 2: Convert to fraction form
    78,347.20/117,508.62 = 25,756.30/x
  3. Step 3: Cross multiply
    78,347.20x = 117,508.62 × 25,756.30
  4. Step 4: Simplify right side
    78,347.20x = 3,026,587,269.31
  5. Step 5: Solve for x
    x = 3,026,587,269.31/78,347.20
  6. Step 6: Final answer
    x = 38,630.45

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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.