Home / 42,717.11-64,031.93-21,618.05

Finding the Fourth Proportional to 42,717.11, 64,031.93 and 21,618.05

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Solution

The fourth proportional to 42,717.11, 64,031.93 and 21,618.05 is: 32,404.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,717.11 : 64,031.93 = 21,618.05 : x
  2. Step 2: Convert to fraction form
    42,717.11/64,031.93 = 21,618.05/x
  3. Step 3: Cross multiply
    42,717.11x = 64,031.93 × 21,618.05
  4. Step 4: Simplify right side
    42,717.11x = 1,384,245,356.25
  5. Step 5: Solve for x
    x = 1,384,245,356.25/42,717.11
  6. Step 6: Final answer
    x = 32,404.94

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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.