Home / 86,464.56-129,712.50-42,091.28

Finding the Fourth Proportional to 86,464.56, 129,712.50 and 42,091.28

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Solution

The fourth proportional to 86,464.56, 129,712.50 and 42,091.28 is: 63,144.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,464.56 : 129,712.50 = 42,091.28 : x
  2. Step 2: Convert to fraction form
    86,464.56/129,712.50 = 42,091.28/x
  3. Step 3: Cross multiply
    86,464.56x = 129,712.50 × 42,091.28
  4. Step 4: Simplify right side
    86,464.56x = 5,459,765,157
  5. Step 5: Solve for x
    x = 5,459,765,157/86,464.56
  6. Step 6: Final answer
    x = 63,144.54

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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.