Home / 99,780.78-137,698.77-58,946.25

Finding the Fourth Proportional to 99,780.78, 137,698.77 and 58,946.25

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Solution

The fourth proportional to 99,780.78, 137,698.77 and 58,946.25 is: 81,346.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,780.78 : 137,698.77 = 58,946.25 : x
  2. Step 2: Convert to fraction form
    99,780.78/137,698.77 = 58,946.25/x
  3. Step 3: Cross multiply
    99,780.78x = 137,698.77 × 58,946.25
  4. Step 4: Simplify right side
    99,780.78x = 8,116,826,121.11
  5. Step 5: Solve for x
    x = 8,116,826,121.11/99,780.78
  6. Step 6: Final answer
    x = 81,346.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.