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Finding the Fourth Proportional to 41,272.80, 61,909.20 and 30,904.80

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Solution

The fourth proportional to 41,272.80, 61,909.20 and 30,904.80 is: 46,357.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,272.80 : 61,909.20 = 30,904.80 : x
  2. Step 2: Convert to fraction form
    41,272.80/61,909.20 = 30,904.80/x
  3. Step 3: Cross multiply
    41,272.80x = 61,909.20 × 30,904.80
  4. Step 4: Simplify right side
    41,272.80x = 1,913,291,444.16
  5. Step 5: Solve for x
    x = 1,913,291,444.16/41,272.80
  6. Step 6: Final answer
    x = 46,357.20

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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.