Home / 78,392,195-108,187,288.80-47,031,424.20

Finding the Fourth Proportional to 78,392,195, 108,187,288.80 and 47,031,424.20

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Solution

The fourth proportional to 78,392,195, 108,187,288.80 and 47,031,424.20 is: 64,907,000.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,392,195 : 108,187,288.80 = 47,031,424.20 : x
  2. Step 2: Convert to fraction form
    78,392,195/108,187,288.80 = 47,031,424.20/x
  3. Step 3: Cross multiply
    78,392,195x = 108,187,288.80 × 47,031,424.20
  4. Step 4: Simplify right side
    78,392,195x = 5,088,202,272,600,709
  5. Step 5: Solve for x
    x = 5,088,202,272,600,709/78,392,195
  6. Step 6: Final answer
    x = 64,907,000.92

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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.