Home / 81,138,347.24-121,721,692.62-35,698,960.76

Finding the Fourth Proportional to 81,138,347.24, 121,721,692.62 and 35,698,960.76

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Solution

The fourth proportional to 81,138,347.24, 121,721,692.62 and 35,698,960.76 is: 53,554,676.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,138,347.24 : 121,721,692.62 = 35,698,960.76 : x
  2. Step 2: Convert to fraction form
    81,138,347.24/121,721,692.62 = 35,698,960.76/x
  3. Step 3: Cross multiply
    81,138,347.24x = 121,721,692.62 × 35,698,960.76
  4. Step 4: Simplify right side
    81,138,347.24x = 4,345,337,928,482,161.50
  5. Step 5: Solve for x
    x = 4,345,337,928,482,161.50/81,138,347.24
  6. Step 6: Final answer
    x = 53,554,676.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.