Home / 86,981.33-130,456.57-39,585.39

Finding the Fourth Proportional to 86,981.33, 130,456.57 and 39,585.39

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Solution

The fourth proportional to 86,981.33, 130,456.57 and 39,585.39 is: 59,371.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,981.33 : 130,456.57 = 39,585.39 : x
  2. Step 2: Convert to fraction form
    86,981.33/130,456.57 = 39,585.39/x
  3. Step 3: Cross multiply
    86,981.33x = 130,456.57 × 39,585.39
  4. Step 4: Simplify right side
    86,981.33x = 5,164,174,201.51
  5. Step 5: Solve for x
    x = 5,164,174,201.51/86,981.33
  6. Step 6: Final answer
    x = 59,371.07

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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.