Home / 81,429.32-121,963.53-62,570.54

Finding the Fourth Proportional to 81,429.32, 121,963.53 and 62,570.54

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Solution

The fourth proportional to 81,429.32, 121,963.53 and 62,570.54 is: 93,717.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,429.32 : 121,963.53 = 62,570.54 : x
  2. Step 2: Convert to fraction form
    81,429.32/121,963.53 = 62,570.54/x
  3. Step 3: Cross multiply
    81,429.32x = 121,963.53 × 62,570.54
  4. Step 4: Simplify right side
    81,429.32x = 7,631,323,932.41
  5. Step 5: Solve for x
    x = 7,631,323,932.41/81,429.32
  6. Step 6: Final answer
    x = 93,717.15

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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.