Home / 81,187,189.48-111,929,937.52-64,497,306.07

Finding the Fourth Proportional to 81,187,189.48, 111,929,937.52 and 64,497,306.07

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Solution

The fourth proportional to 81,187,189.48, 111,929,937.52 and 64,497,306.07 is: 88,920,179.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,187,189.48 : 111,929,937.52 = 64,497,306.07 : x
  2. Step 2: Convert to fraction form
    81,187,189.48/111,929,937.52 = 64,497,306.07/x
  3. Step 3: Cross multiply
    81,187,189.48x = 111,929,937.52 × 64,497,306.07
  4. Step 4: Simplify right side
    81,187,189.48x = 7,219,179,438,623,417
  5. Step 5: Solve for x
    x = 7,219,179,438,623,417/81,187,189.48
  6. Step 6: Final answer
    x = 88,920,179.22

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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.