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Finding the Fourth Proportional to 86,388.60, 119,216.16 and 48,663.12

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Solution

The fourth proportional to 86,388.60, 119,216.16 and 48,663.12 is: 67,155.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,388.60 : 119,216.16 = 48,663.12 : x
  2. Step 2: Convert to fraction form
    86,388.60/119,216.16 = 48,663.12/x
  3. Step 3: Cross multiply
    86,388.60x = 119,216.16 × 48,663.12
  4. Step 4: Simplify right side
    86,388.60x = 5,801,430,300.02
  5. Step 5: Solve for x
    x = 5,801,430,300.02/86,388.60
  6. Step 6: Final answer
    x = 67,155.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.