Home / 77,296,972.20-115,945,458.30-69,644,221.80

Finding the Fourth Proportional to 77,296,972.20, 115,945,458.30 and 69,644,221.80

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Solution

The fourth proportional to 77,296,972.20, 115,945,458.30 and 69,644,221.80 is: 104,466,332.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,296,972.20 : 115,945,458.30 = 69,644,221.80 : x
  2. Step 2: Convert to fraction form
    77,296,972.20/115,945,458.30 = 69,644,221.80/x
  3. Step 3: Cross multiply
    77,296,972.20x = 115,945,458.30 × 69,644,221.80
  4. Step 4: Simplify right side
    77,296,972.20x = 8,074,931,214,547,850
  5. Step 5: Solve for x
    x = 8,074,931,214,547,850/77,296,972.20
  6. Step 6: Final answer
    x = 104,466,332.70

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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.