Home / 42,921.22-64,395.84-20,737.14

Finding the Fourth Proportional to 42,921.22, 64,395.84 and 20,737.14

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Solution

The fourth proportional to 42,921.22, 64,395.84 and 20,737.14 is: 31,112.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,921.22 : 64,395.84 = 20,737.14 : x
  2. Step 2: Convert to fraction form
    42,921.22/64,395.84 = 20,737.14/x
  3. Step 3: Cross multiply
    42,921.22x = 64,395.84 × 20,737.14
  4. Step 4: Simplify right side
    42,921.22x = 1,335,385,549.50
  5. Step 5: Solve for x
    x = 1,335,385,549.50/42,921.22
  6. Step 6: Final answer
    x = 31,112.48

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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.