Home / 81,338.30-121,769.85-58,010.30

Finding the Fourth Proportional to 81,338.30, 121,769.85 and 58,010.30

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Solution

The fourth proportional to 81,338.30, 121,769.85 and 58,010.30 is: 86,845.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,338.30 : 121,769.85 = 58,010.30 : x
  2. Step 2: Convert to fraction form
    81,338.30/121,769.85 = 58,010.30/x
  3. Step 3: Cross multiply
    81,338.30x = 121,769.85 × 58,010.30
  4. Step 4: Simplify right side
    81,338.30x = 7,063,905,529.46
  5. Step 5: Solve for x
    x = 7,063,905,529.46/81,338.30
  6. Step 6: Final answer
    x = 86,845.99

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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.