Home / 42,749.47-64,125.30-20,254.87

Finding the Fourth Proportional to 42,749.47, 64,125.30 and 20,254.87

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Solution

The fourth proportional to 42,749.47, 64,125.30 and 20,254.87 is: 30,382.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,749.47 : 64,125.30 = 20,254.87 : x
  2. Step 2: Convert to fraction form
    42,749.47/64,125.30 = 20,254.87/x
  3. Step 3: Cross multiply
    42,749.47x = 64,125.30 × 20,254.87
  4. Step 4: Simplify right side
    42,749.47x = 1,298,849,294.58
  5. Step 5: Solve for x
    x = 1,298,849,294.58/42,749.47
  6. Step 6: Final answer
    x = 30,382.82

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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.