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Finding the Fourth Proportional to 92,582.40, 138,873.60 and 30,259.20

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Solution

The fourth proportional to 92,582.40, 138,873.60 and 30,259.20 is: 45,388.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,582.40 : 138,873.60 = 30,259.20 : x
  2. Step 2: Convert to fraction form
    92,582.40/138,873.60 = 30,259.20/x
  3. Step 3: Cross multiply
    92,582.40x = 138,873.60 × 30,259.20
  4. Step 4: Simplify right side
    92,582.40x = 4,202,204,037.12
  5. Step 5: Solve for x
    x = 4,202,204,037.12/92,582.40
  6. Step 6: Final answer
    x = 45,388.80

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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.