Home / 81,440.72-112,392.79-45,642.26

Finding the Fourth Proportional to 81,440.72, 112,392.79 and 45,642.26

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Solution

The fourth proportional to 81,440.72, 112,392.79 and 45,642.26 is: 62,988.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,440.72 : 112,392.79 = 45,642.26 : x
  2. Step 2: Convert to fraction form
    81,440.72/112,392.79 = 45,642.26/x
  3. Step 3: Cross multiply
    81,440.72x = 112,392.79 × 45,642.26
  4. Step 4: Simplify right side
    81,440.72x = 5,129,860,715.09
  5. Step 5: Solve for x
    x = 5,129,860,715.09/81,440.72
  6. Step 6: Final answer
    x = 62,988.89

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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.