Home / 115,480.47-159,354-64,489.25

Finding the Fourth Proportional to 115,480.47, 159,354 and 64,489.25

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Solution

The fourth proportional to 115,480.47, 159,354 and 64,489.25 is: 88,990.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,480.47 : 159,354 = 64,489.25 : x
  2. Step 2: Convert to fraction form
    115,480.47/159,354 = 64,489.25/x
  3. Step 3: Cross multiply
    115,480.47x = 159,354 × 64,489.25
  4. Step 4: Simplify right side
    115,480.47x = 10,276,619,944.50
  5. Step 5: Solve for x
    x = 10,276,619,944.50/115,480.47
  6. Step 6: Final answer
    x = 88,990.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.