Home / 42,746.76-64,133.10-20,553.84

Finding the Fourth Proportional to 42,746.76, 64,133.10 and 20,553.84

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Solution

The fourth proportional to 42,746.76, 64,133.10 and 20,553.84 is: 30,836.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,746.76 : 64,133.10 = 20,553.84 : x
  2. Step 2: Convert to fraction form
    42,746.76/64,133.10 = 20,553.84/x
  3. Step 3: Cross multiply
    42,746.76x = 64,133.10 × 20,553.84
  4. Step 4: Simplify right side
    42,746.76x = 1,318,181,476.10
  5. Step 5: Solve for x
    x = 1,318,181,476.10/42,746.76
  6. Step 6: Final answer
    x = 30,836.99

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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.