Home / 42,754.47-64,132.80-20,259.87

Finding the Fourth Proportional to 42,754.47, 64,132.80 and 20,259.87

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Solution

The fourth proportional to 42,754.47, 64,132.80 and 20,259.87 is: 30,390.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,754.47 : 64,132.80 = 20,259.87 : x
  2. Step 2: Convert to fraction form
    42,754.47/64,132.80 = 20,259.87/x
  3. Step 3: Cross multiply
    42,754.47x = 64,132.80 × 20,259.87
  4. Step 4: Simplify right side
    42,754.47x = 1,299,322,190.74
  5. Step 5: Solve for x
    x = 1,299,322,190.74/42,754.47
  6. Step 6: Final answer
    x = 30,390.32

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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.