Home / 81,747.84-112,817.20-45,453.36

Finding the Fourth Proportional to 81,747.84, 112,817.20 and 45,453.36

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Solution

The fourth proportional to 81,747.84, 112,817.20 and 45,453.36 is: 62,728.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,747.84 : 112,817.20 = 45,453.36 : x
  2. Step 2: Convert to fraction form
    81,747.84/112,817.20 = 45,453.36/x
  3. Step 3: Cross multiply
    81,747.84x = 112,817.20 × 45,453.36
  4. Step 4: Simplify right side
    81,747.84x = 5,127,920,805.79
  5. Step 5: Solve for x
    x = 5,127,920,805.79/81,747.84
  6. Step 6: Final answer
    x = 62,728.52

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1.5x scale

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.