Home / 56,978,031.89-78,656,794.84-38,171,995.61

Finding the Fourth Proportional to 56,978,031.89, 78,656,794.84 and 38,171,995.61

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Solution

The fourth proportional to 56,978,031.89, 78,656,794.84 and 38,171,995.61 is: 52,695,516.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,978,031.89 : 78,656,794.84 = 38,171,995.61 : x
  2. Step 2: Convert to fraction form
    56,978,031.89/78,656,794.84 = 38,171,995.61/x
  3. Step 3: Cross multiply
    56,978,031.89x = 78,656,794.84 × 38,171,995.61
  4. Step 4: Simplify right side
    56,978,031.89x = 3,002,486,826,983,581.50
  5. Step 5: Solve for x
    x = 3,002,486,826,983,581.50/56,978,031.89
  6. Step 6: Final answer
    x = 52,695,516.63

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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.