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Finding the Fourth Proportional to 99,064.80, 148,615.20 and 32,486.40

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Solution

The fourth proportional to 99,064.80, 148,615.20 and 32,486.40 is: 48,735.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,064.80 : 148,615.20 = 32,486.40 : x
  2. Step 2: Convert to fraction form
    99,064.80/148,615.20 = 32,486.40/x
  3. Step 3: Cross multiply
    99,064.80x = 148,615.20 × 32,486.40
  4. Step 4: Simplify right side
    99,064.80x = 4,827,972,833.28
  5. Step 5: Solve for x
    x = 4,827,972,833.28/99,064.80
  6. Step 6: Final answer
    x = 48,735.50

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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.