Home / 81,077.04-121,670.93-28,486.53

Finding the Fourth Proportional to 81,077.04, 121,670.93 and 28,486.53

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Solution

The fourth proportional to 81,077.04, 121,670.93 and 28,486.53 is: 42,749.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,077.04 : 121,670.93 = 28,486.53 : x
  2. Step 2: Convert to fraction form
    81,077.04/121,670.93 = 28,486.53/x
  3. Step 3: Cross multiply
    81,077.04x = 121,670.93 × 28,486.53
  4. Step 4: Simplify right side
    81,077.04x = 3,465,982,392.96
  5. Step 5: Solve for x
    x = 3,465,982,392.96/81,077.04
  6. Step 6: Final answer
    x = 42,749.24

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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.