Home / 86,780.62-130,077.78-36,818.56

Finding the Fourth Proportional to 86,780.62, 130,077.78 and 36,818.56

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Solution

The fourth proportional to 86,780.62, 130,077.78 and 36,818.56 is: 55,188.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,780.62 : 130,077.78 = 36,818.56 : x
  2. Step 2: Convert to fraction form
    86,780.62/130,077.78 = 36,818.56/x
  3. Step 3: Cross multiply
    86,780.62x = 130,077.78 × 36,818.56
  4. Step 4: Simplify right side
    86,780.62x = 4,789,276,547.60
  5. Step 5: Solve for x
    x = 4,789,276,547.60/86,780.62
  6. Step 6: Final answer
    x = 55,188.32

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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.