Home / 80,758.81-121,130.79-21,592.36

Finding the Fourth Proportional to 80,758.81, 121,130.79 and 21,592.36

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Solution

The fourth proportional to 80,758.81, 121,130.79 and 21,592.36 is: 32,386.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,758.81 : 121,130.79 = 21,592.36 : x
  2. Step 2: Convert to fraction form
    80,758.81/121,130.79 = 21,592.36/x
  3. Step 3: Cross multiply
    80,758.81x = 121,130.79 × 21,592.36
  4. Step 4: Simplify right side
    80,758.81x = 2,615,499,624.76
  5. Step 5: Solve for x
    x = 2,615,499,624.76/80,758.81
  6. Step 6: Final answer
    x = 32,386.55

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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.