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Finding the Fourth Proportional to 86,388.20, 129,600.48 and 48,966.20

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Solution

The fourth proportional to 86,388.20, 129,600.48 and 48,966.20 is: 73,459.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,388.20 : 129,600.48 = 48,966.20 : x
  2. Step 2: Convert to fraction form
    86,388.20/129,600.48 = 48,966.20/x
  3. Step 3: Cross multiply
    86,388.20x = 129,600.48 × 48,966.20
  4. Step 4: Simplify right side
    86,388.20x = 6,346,043,023.78
  5. Step 5: Solve for x
    x = 6,346,043,023.78/86,388.20
  6. Step 6: Final answer
    x = 73,459.60

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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.