Home / 42,748.97-64,124.55-20,254.37

Finding the Fourth Proportional to 42,748.97, 64,124.55 and 20,254.37

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Solution

The fourth proportional to 42,748.97, 64,124.55 and 20,254.37 is: 30,382.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,748.97 : 64,124.55 = 20,254.37 : x
  2. Step 2: Convert to fraction form
    42,748.97/64,124.55 = 20,254.37/x
  3. Step 3: Cross multiply
    42,748.97x = 64,124.55 × 20,254.37
  4. Step 4: Simplify right side
    42,748.97x = 1,298,802,041.16
  5. Step 5: Solve for x
    x = 1,298,802,041.16/42,748.97
  6. Step 6: Final answer
    x = 30,382.07

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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.