Home / 86,581.10-129,871.65-84,637.10

Finding the Fourth Proportional to 86,581.10, 129,871.65 and 84,637.10

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Solution

The fourth proportional to 86,581.10, 129,871.65 and 84,637.10 is: 126,955.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,581.10 : 129,871.65 = 84,637.10 : x
  2. Step 2: Convert to fraction form
    86,581.10/129,871.65 = 84,637.10/x
  3. Step 3: Cross multiply
    86,581.10x = 129,871.65 × 84,637.10
  4. Step 4: Simplify right side
    86,581.10x = 10,991,959,828.22
  5. Step 5: Solve for x
    x = 10,991,959,828.22/86,581.10
  6. Step 6: Final answer
    x = 126,955.65

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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.