Home / 112,632.78-155,438.07-62,331.78

Finding the Fourth Proportional to 112,632.78, 155,438.07 and 62,331.78

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Solution

The fourth proportional to 112,632.78, 155,438.07 and 62,331.78 is: 86,020.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,632.78 : 155,438.07 = 62,331.78 : x
  2. Step 2: Convert to fraction form
    112,632.78/155,438.07 = 62,331.78/x
  3. Step 3: Cross multiply
    112,632.78x = 155,438.07 × 62,331.78
  4. Step 4: Simplify right side
    112,632.78x = 9,688,731,582.86
  5. Step 5: Solve for x
    x = 9,688,731,582.86/112,632.78
  6. Step 6: Final answer
    x = 86,020.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.