Home / 81,055.48-121,569.04-36,671.80

Finding the Fourth Proportional to 81,055.48, 121,569.04 and 36,671.80

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Solution

The fourth proportional to 81,055.48, 121,569.04 and 36,671.80 is: 55,001.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,055.48 : 121,569.04 = 36,671.80 : x
  2. Step 2: Convert to fraction form
    81,055.48/121,569.04 = 36,671.80/x
  3. Step 3: Cross multiply
    81,055.48x = 121,569.04 × 36,671.80
  4. Step 4: Simplify right side
    81,055.48x = 4,458,155,521.07
  5. Step 5: Solve for x
    x = 4,458,155,521.07/81,055.48
  6. Step 6: Final answer
    x = 55,001.28

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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.