Home / 77,988.52-116,985.66-21,828.52

Finding the Fourth Proportional to 77,988.52, 116,985.66 and 21,828.52

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Solution

The fourth proportional to 77,988.52, 116,985.66 and 21,828.52 is: 32,743.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,988.52 : 116,985.66 = 21,828.52 : x
  2. Step 2: Convert to fraction form
    77,988.52/116,985.66 = 21,828.52/x
  3. Step 3: Cross multiply
    77,988.52x = 116,985.66 × 21,828.52
  4. Step 4: Simplify right side
    77,988.52x = 2,553,623,819.02
  5. Step 5: Solve for x
    x = 2,553,623,819.02/77,988.52
  6. Step 6: Final answer
    x = 32,743.59

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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.