Home / 81,018.61-111,805.69-44,720.07

Finding the Fourth Proportional to 81,018.61, 111,805.69 and 44,720.07

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Solution

The fourth proportional to 81,018.61, 111,805.69 and 44,720.07 is: 61,713.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,018.61 : 111,805.69 = 44,720.07 : x
  2. Step 2: Convert to fraction form
    81,018.61/111,805.69 = 44,720.07/x
  3. Step 3: Cross multiply
    81,018.61x = 111,805.69 × 44,720.07
  4. Step 4: Simplify right side
    81,018.61x = 4,999,957,905.86
  5. Step 5: Solve for x
    x = 4,999,957,905.86/81,018.61
  6. Step 6: Final answer
    x = 61,713.70

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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.