Home / 81,145.57-121,536.85-46,909.41

Finding the Fourth Proportional to 81,145.57, 121,536.85 and 46,909.41

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Solution

The fourth proportional to 81,145.57, 121,536.85 and 46,909.41 is: 70,259.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,145.57 : 121,536.85 = 46,909.41 : x
  2. Step 2: Convert to fraction form
    81,145.57/121,536.85 = 46,909.41/x
  3. Step 3: Cross multiply
    81,145.57x = 121,536.85 × 46,909.41
  4. Step 4: Simplify right side
    81,145.57x = 5,701,221,926.76
  5. Step 5: Solve for x
    x = 5,701,221,926.76/81,145.57
  6. Step 6: Final answer
    x = 70,259.19

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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.