Home / 64,648.47-96,972.66-20,278.65

Finding the Fourth Proportional to 64,648.47, 96,972.66 and 20,278.65

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Solution

The fourth proportional to 64,648.47, 96,972.66 and 20,278.65 is: 30,417.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,648.47 : 96,972.66 = 20,278.65 : x
  2. Step 2: Convert to fraction form
    64,648.47/96,972.66 = 20,278.65/x
  3. Step 3: Cross multiply
    64,648.47x = 96,972.66 × 20,278.65
  4. Step 4: Simplify right side
    64,648.47x = 1,966,474,631.71
  5. Step 5: Solve for x
    x = 1,966,474,631.71/64,648.47
  6. Step 6: Final answer
    x = 30,417.96

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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.