Home / 101,748.12-140,407.47-56,427.90

Finding the Fourth Proportional to 101,748.12, 140,407.47 and 56,427.90

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Solution

The fourth proportional to 101,748.12, 140,407.47 and 56,427.90 is: 77,867.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,748.12 : 140,407.47 = 56,427.90 : x
  2. Step 2: Convert to fraction form
    101,748.12/140,407.47 = 56,427.90/x
  3. Step 3: Cross multiply
    101,748.12x = 140,407.47 × 56,427.90
  4. Step 4: Simplify right side
    101,748.12x = 7,922,898,676.41
  5. Step 5: Solve for x
    x = 7,922,898,676.41/101,748.12
  6. Step 6: Final answer
    x = 77,867.76

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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.