Home / 67,390.02-101,104.47-20,649.78

Finding the Fourth Proportional to 67,390.02, 101,104.47 and 20,649.78

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Solution

The fourth proportional to 67,390.02, 101,104.47 and 20,649.78 is: 30,980.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,390.02 : 101,104.47 = 20,649.78 : x
  2. Step 2: Convert to fraction form
    67,390.02/101,104.47 = 20,649.78/x
  3. Step 3: Cross multiply
    67,390.02x = 101,104.47 × 20,649.78
  4. Step 4: Simplify right side
    67,390.02x = 2,087,785,062.52
  5. Step 5: Solve for x
    x = 2,087,785,062.52/67,390.02
  6. Step 6: Final answer
    x = 30,980.63

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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.