Home / 42,751.98-64,129.06-20,257.38

Finding the Fourth Proportional to 42,751.98, 64,129.06 and 20,257.38

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Solution

The fourth proportional to 42,751.98, 64,129.06 and 20,257.38 is: 30,386.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,751.98 : 64,129.06 = 20,257.38 : x
  2. Step 2: Convert to fraction form
    42,751.98/64,129.06 = 20,257.38/x
  3. Step 3: Cross multiply
    42,751.98x = 64,129.06 × 20,257.38
  4. Step 4: Simplify right side
    42,751.98x = 1,299,086,737.46
  5. Step 5: Solve for x
    x = 1,299,086,737.46/42,751.98
  6. Step 6: Final answer
    x = 30,386.59

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1.5x scale

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.