Home / 81,875.12-112,970.56-47,876.96

Finding the Fourth Proportional to 81,875.12, 112,970.56 and 47,876.96

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Solution

The fourth proportional to 81,875.12, 112,970.56 and 47,876.96 is: 66,060.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,875.12 : 112,970.56 = 47,876.96 : x
  2. Step 2: Convert to fraction form
    81,875.12/112,970.56 = 47,876.96/x
  3. Step 3: Cross multiply
    81,875.12x = 112,970.56 × 47,876.96
  4. Step 4: Simplify right side
    81,875.12x = 5,408,686,982.30
  5. Step 5: Solve for x
    x = 5,408,686,982.30/81,875.12
  6. Step 6: Final answer
    x = 66,060.20

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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.