Home / 81,184.59-121,776.93-53,281.17

Finding the Fourth Proportional to 81,184.59, 121,776.93 and 53,281.17

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Solution

The fourth proportional to 81,184.59, 121,776.93 and 53,281.17 is: 79,921.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,184.59 : 121,776.93 = 53,281.17 : x
  2. Step 2: Convert to fraction form
    81,184.59/121,776.93 = 53,281.17/x
  3. Step 3: Cross multiply
    81,184.59x = 121,776.93 × 53,281.17
  4. Step 4: Simplify right side
    81,184.59x = 6,488,417,309.41
  5. Step 5: Solve for x
    x = 6,488,417,309.41/81,184.59
  6. Step 6: Final answer
    x = 79,921.78

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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.