Home / 56,754,890.72-78,321,748.39-30,649,407.78

Finding the Fourth Proportional to 56,754,890.72, 78,321,748.39 and 30,649,407.78

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Solution

The fourth proportional to 56,754,890.72, 78,321,748.39 and 30,649,407.78 is: 42,296,182.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,754,890.72 : 78,321,748.39 = 30,649,407.78 : x
  2. Step 2: Convert to fraction form
    56,754,890.72/78,321,748.39 = 30,649,407.78/x
  3. Step 3: Cross multiply
    56,754,890.72x = 78,321,748.39 × 30,649,407.78
  4. Step 4: Simplify right side
    56,754,890.72x = 2,400,515,204,447,668.50
  5. Step 5: Solve for x
    x = 2,400,515,204,447,668.50/56,754,890.72
  6. Step 6: Final answer
    x = 42,296,182.30

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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.