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Finding the Fourth Proportional to 61,488.96, 84,867.12 and 40,260.48

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Solution

The fourth proportional to 61,488.96, 84,867.12 and 40,260.48 is: 55,567.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,488.96 : 84,867.12 = 40,260.48 : x
  2. Step 2: Convert to fraction form
    61,488.96/84,867.12 = 40,260.48/x
  3. Step 3: Cross multiply
    61,488.96x = 84,867.12 × 40,260.48
  4. Step 4: Simplify right side
    61,488.96x = 3,416,790,987.42
  5. Step 5: Solve for x
    x = 3,416,790,987.42/61,488.96
  6. Step 6: Final answer
    x = 55,567.55

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1.5x scale

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.