Home / 81,097.20-121,608.54-45,050.58

Finding the Fourth Proportional to 81,097.20, 121,608.54 and 45,050.58

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Solution

The fourth proportional to 81,097.20, 121,608.54 and 45,050.58 is: 67,555.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,097.20 : 121,608.54 = 45,050.58 : x
  2. Step 2: Convert to fraction form
    81,097.20/121,608.54 = 45,050.58/x
  3. Step 3: Cross multiply
    81,097.20x = 121,608.54 × 45,050.58
  4. Step 4: Simplify right side
    81,097.20x = 5,478,535,259.95
  5. Step 5: Solve for x
    x = 5,478,535,259.95/81,097.20
  6. Step 6: Final answer
    x = 67,555.17

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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.