Home / 80,966.52-121,467.06-28,379.16

Finding the Fourth Proportional to 80,966.52, 121,467.06 and 28,379.16

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Solution

The fourth proportional to 80,966.52, 121,467.06 and 28,379.16 is: 42,574.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,966.52 : 121,467.06 = 28,379.16 : x
  2. Step 2: Convert to fraction form
    80,966.52/121,467.06 = 28,379.16/x
  3. Step 3: Cross multiply
    80,966.52x = 121,467.06 × 28,379.16
  4. Step 4: Simplify right side
    80,966.52x = 3,447,133,130.47
  5. Step 5: Solve for x
    x = 3,447,133,130.47/80,966.52
  6. Step 6: Final answer
    x = 42,574.80

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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.