Home / 81,089.76-111,895.93-55,617.89

Finding the Fourth Proportional to 81,089.76, 111,895.93 and 55,617.89

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Solution

The fourth proportional to 81,089.76, 111,895.93 and 55,617.89 is: 76,747.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,089.76 : 111,895.93 = 55,617.89 : x
  2. Step 2: Convert to fraction form
    81,089.76/111,895.93 = 55,617.89/x
  3. Step 3: Cross multiply
    81,089.76x = 111,895.93 × 55,617.89
  4. Step 4: Simplify right side
    81,089.76x = 6,223,415,526.19
  5. Step 5: Solve for x
    x = 6,223,415,526.19/81,089.76
  6. Step 6: Final answer
    x = 76,747.24

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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.