Home / 77,878.47-116,816.03-21,717.08

Finding the Fourth Proportional to 77,878.47, 116,816.03 and 21,717.08

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Solution

The fourth proportional to 77,878.47, 116,816.03 and 21,717.08 is: 32,575.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,878.47 : 116,816.03 = 21,717.08 : x
  2. Step 2: Convert to fraction form
    77,878.47/116,816.03 = 21,717.08/x
  3. Step 3: Cross multiply
    77,878.47x = 116,816.03 × 21,717.08
  4. Step 4: Simplify right side
    77,878.47x = 2,536,902,960.21
  5. Step 5: Solve for x
    x = 2,536,902,960.21/77,878.47
  6. Step 6: Final answer
    x = 32,575.15

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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.