Home / 81,398.48-121,939.32-60,012.24

Finding the Fourth Proportional to 81,398.48, 121,939.32 and 60,012.24

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Solution

The fourth proportional to 81,398.48, 121,939.32 and 60,012.24 is: 89,901.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,398.48 : 121,939.32 = 60,012.24 : x
  2. Step 2: Convert to fraction form
    81,398.48/121,939.32 = 60,012.24/x
  3. Step 3: Cross multiply
    81,398.48x = 121,939.32 × 60,012.24
  4. Step 4: Simplify right side
    81,398.48x = 7,317,851,737.28
  5. Step 5: Solve for x
    x = 7,317,851,737.28/81,398.48
  6. Step 6: Final answer
    x = 89,901.58

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1.5x scale

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.