Home / 86,325.72-129,346.02-39,475.32

Finding the Fourth Proportional to 86,325.72, 129,346.02 and 39,475.32

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Solution

The fourth proportional to 86,325.72, 129,346.02 and 39,475.32 is: 59,147.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,325.72 : 129,346.02 = 39,475.32 : x
  2. Step 2: Convert to fraction form
    86,325.72/129,346.02 = 39,475.32/x
  3. Step 3: Cross multiply
    86,325.72x = 129,346.02 × 39,475.32
  4. Step 4: Simplify right side
    86,325.72x = 5,105,975,530.23
  5. Step 5: Solve for x
    x = 5,105,975,530.23/86,325.72
  6. Step 6: Final answer
    x = 59,147.79

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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.