Home / 87,219.52-130,848.76-31,815.52

Finding the Fourth Proportional to 87,219.52, 130,848.76 and 31,815.52

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Solution

The fourth proportional to 87,219.52, 130,848.76 and 31,815.52 is: 47,730.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,219.52 : 130,848.76 = 31,815.52 : x
  2. Step 2: Convert to fraction form
    87,219.52/130,848.76 = 31,815.52/x
  3. Step 3: Cross multiply
    87,219.52x = 130,848.76 × 31,815.52
  4. Step 4: Simplify right side
    87,219.52x = 4,163,021,340.76
  5. Step 5: Solve for x
    x = 4,163,021,340.76/87,219.52
  6. Step 6: Final answer
    x = 47,730.39

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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.