Home / 81,338.04-121,999.86-28,744.92

Finding the Fourth Proportional to 81,338.04, 121,999.86 and 28,744.92

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Solution

The fourth proportional to 81,338.04, 121,999.86 and 28,744.92 is: 43,114.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,338.04 : 121,999.86 = 28,744.92 : x
  2. Step 2: Convert to fraction form
    81,338.04/121,999.86 = 28,744.92/x
  3. Step 3: Cross multiply
    81,338.04x = 121,999.86 × 28,744.92
  4. Step 4: Simplify right side
    81,338.04x = 3,506,876,215.71
  5. Step 5: Solve for x
    x = 3,506,876,215.71/81,338.04
  6. Step 6: Final answer
    x = 43,114.84

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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.