Home / 80,864.30-121,296.45-51,339.80

Finding the Fourth Proportional to 80,864.30, 121,296.45 and 51,339.80

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Solution

The fourth proportional to 80,864.30, 121,296.45 and 51,339.80 is: 77,009.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,864.30 : 121,296.45 = 51,339.80 : x
  2. Step 2: Convert to fraction form
    80,864.30/121,296.45 = 51,339.80/x
  3. Step 3: Cross multiply
    80,864.30x = 121,296.45 × 51,339.80
  4. Step 4: Simplify right side
    80,864.30x = 6,227,335,483.71
  5. Step 5: Solve for x
    x = 6,227,335,483.71/80,864.30
  6. Step 6: Final answer
    x = 77,009.70

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1.5x scale

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.