Home / 86,787.52-130,134.45-39,376.74

Finding the Fourth Proportional to 86,787.52, 130,134.45 and 39,376.74

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Solution

The fourth proportional to 86,787.52, 130,134.45 and 39,376.74 is: 59,043.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,787.52 : 130,134.45 = 39,376.74 : x
  2. Step 2: Convert to fraction form
    86,787.52/130,134.45 = 39,376.74/x
  3. Step 3: Cross multiply
    86,787.52x = 130,134.45 × 39,376.74
  4. Step 4: Simplify right side
    86,787.52x = 5,124,270,402.69
  5. Step 5: Solve for x
    x = 5,124,270,402.69/86,787.52
  6. Step 6: Final answer
    x = 59,043.86

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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.