Home / 86,740.66-130,022.36-49,221.50

Finding the Fourth Proportional to 86,740.66, 130,022.36 and 49,221.50

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Solution

The fourth proportional to 86,740.66, 130,022.36 and 49,221.50 is: 73,781.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,740.66 : 130,022.36 = 49,221.50 : x
  2. Step 2: Convert to fraction form
    86,740.66/130,022.36 = 49,221.50/x
  3. Step 3: Cross multiply
    86,740.66x = 130,022.36 × 49,221.50
  4. Step 4: Simplify right side
    86,740.66x = 6,399,895,346.63
  5. Step 5: Solve for x
    x = 6,399,895,346.63/86,740.66
  6. Step 6: Final answer
    x = 73,781.96

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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.