Home / 86,057.04-129,100.60-39,314.64

Finding the Fourth Proportional to 86,057.04, 129,100.60 and 39,314.64

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Solution

The fourth proportional to 86,057.04, 129,100.60 and 39,314.64 is: 58,978.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,057.04 : 129,100.60 = 39,314.64 : x
  2. Step 2: Convert to fraction form
    86,057.04/129,100.60 = 39,314.64/x
  3. Step 3: Cross multiply
    86,057.04x = 129,100.60 × 39,314.64
  4. Step 4: Simplify right side
    86,057.04x = 5,075,543,612.78
  5. Step 5: Solve for x
    x = 5,075,543,612.78/86,057.04
  6. Step 6: Final answer
    x = 58,978.83

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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.