Home / 80,904.90-121,357.35-49,412.10

Finding the Fourth Proportional to 80,904.90, 121,357.35 and 49,412.10

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Solution

The fourth proportional to 80,904.90, 121,357.35 and 49,412.10 is: 74,118.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,904.90 : 121,357.35 = 49,412.10 : x
  2. Step 2: Convert to fraction form
    80,904.90/121,357.35 = 49,412.10/x
  3. Step 3: Cross multiply
    80,904.90x = 121,357.35 × 49,412.10
  4. Step 4: Simplify right side
    80,904.90x = 5,996,521,513.94
  5. Step 5: Solve for x
    x = 5,996,521,513.94/80,904.90
  6. Step 6: Final answer
    x = 74,118.15

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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.