Home / 81,668,408.85-112,710,346.43-61,005,982.77

Finding the Fourth Proportional to 81,668,408.85, 112,710,346.43 and 61,005,982.77

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Solution

The fourth proportional to 81,668,408.85, 112,710,346.43 and 61,005,982.77 is: 84,194,189.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,668,408.85 : 112,710,346.43 = 61,005,982.77 : x
  2. Step 2: Convert to fraction form
    81,668,408.85/112,710,346.43 = 61,005,982.77/x
  3. Step 3: Cross multiply
    81,668,408.85x = 112,710,346.43 × 61,005,982.77
  4. Step 4: Simplify right side
    81,668,408.85x = 6,876,005,452,004,281
  5. Step 5: Solve for x
    x = 6,876,005,452,004,281/81,668,408.85
  6. Step 6: Final answer
    x = 84,194,189.02

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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.