Home / 86,740.16-130,021.61-49,221

Finding the Fourth Proportional to 86,740.16, 130,021.61 and 49,221

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Solution

The fourth proportional to 86,740.16, 130,021.61 and 49,221 is: 73,781.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,740.16 : 130,021.61 = 49,221 : x
  2. Step 2: Convert to fraction form
    86,740.16/130,021.61 = 49,221/x
  3. Step 3: Cross multiply
    86,740.16x = 130,021.61 × 49,221
  4. Step 4: Simplify right side
    86,740.16x = 6,399,793,419.71
  5. Step 5: Solve for x
    x = 6,399,793,419.71/86,740.16
  6. Step 6: Final answer
    x = 73,781.21

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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.