Home / 86,213.77-129,335.24-39,470.29

Finding the Fourth Proportional to 86,213.77, 129,335.24 and 39,470.29

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Solution

The fourth proportional to 86,213.77, 129,335.24 and 39,470.29 is: 59,212.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,213.77 : 129,335.24 = 39,470.29 : x
  2. Step 2: Convert to fraction form
    86,213.77/129,335.24 = 39,470.29/x
  3. Step 3: Cross multiply
    86,213.77x = 129,335.24 × 39,470.29
  4. Step 4: Simplify right side
    86,213.77x = 5,104,899,232.67
  5. Step 5: Solve for x
    x = 5,104,899,232.67/86,213.77
  6. Step 6: Final answer
    x = 59,212.11

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1.5x scale

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.