Home / 81,346.10-121,889.55-60,350.90

Finding the Fourth Proportional to 81,346.10, 121,889.55 and 60,350.90

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Solution

The fourth proportional to 81,346.10, 121,889.55 and 60,350.90 is: 90,430.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,346.10 : 121,889.55 = 60,350.90 : x
  2. Step 2: Convert to fraction form
    81,346.10/121,889.55 = 60,350.90/x
  3. Step 3: Cross multiply
    81,346.10x = 121,889.55 × 60,350.90
  4. Step 4: Simplify right side
    81,346.10x = 7,356,144,043.10
  5. Step 5: Solve for x
    x = 7,356,144,043.10/81,346.10
  6. Step 6: Final answer
    x = 90,430.20

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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.