Home / 81,643.90-112,673.63-54,373.23

Finding the Fourth Proportional to 81,643.90, 112,673.63 and 54,373.23

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Solution

The fourth proportional to 81,643.90, 112,673.63 and 54,373.23 is: 75,038.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,643.90 : 112,673.63 = 54,373.23 : x
  2. Step 2: Convert to fraction form
    81,643.90/112,673.63 = 54,373.23/x
  3. Step 3: Cross multiply
    81,643.90x = 112,673.63 × 54,373.23
  4. Step 4: Simplify right side
    81,643.90x = 6,126,429,198.92
  5. Step 5: Solve for x
    x = 6,126,429,198.92/81,643.90
  6. Step 6: Final answer
    x = 75,038.42

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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.