Home / 76,881.02-115,335.45-34,780.91

Finding the Fourth Proportional to 76,881.02, 115,335.45 and 34,780.91

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Solution

The fourth proportional to 76,881.02, 115,335.45 and 34,780.91 is: 52,177.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,881.02 : 115,335.45 = 34,780.91 : x
  2. Step 2: Convert to fraction form
    76,881.02/115,335.45 = 34,780.91/x
  3. Step 3: Cross multiply
    76,881.02x = 115,335.45 × 34,780.91
  4. Step 4: Simplify right side
    76,881.02x = 4,011,471,329.58
  5. Step 5: Solve for x
    x = 4,011,471,329.58/76,881.02
  6. Step 6: Final answer
    x = 52,177.66

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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.