Home / 86,015,999.40-129,023,999.10-48,188,620.20

Finding the Fourth Proportional to 86,015,999.40, 129,023,999.10 and 48,188,620.20

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Solution

The fourth proportional to 86,015,999.40, 129,023,999.10 and 48,188,620.20 is: 72,282,930.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,015,999.40 : 129,023,999.10 = 48,188,620.20 : x
  2. Step 2: Convert to fraction form
    86,015,999.40/129,023,999.10 = 48,188,620.20/x
  3. Step 3: Cross multiply
    86,015,999.40x = 129,023,999.10 × 48,188,620.20
  4. Step 4: Simplify right side
    86,015,999.40x = 6,217,488,489,315,042
  5. Step 5: Solve for x
    x = 6,217,488,489,315,042/86,015,999.40
  6. Step 6: Final answer
    x = 72,282,930.30

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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.