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Finding the Fourth Proportional to 77,900.58, 116,900.52 and 27,979.62

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Solution

The fourth proportional to 77,900.58, 116,900.52 and 27,979.62 is: 41,987.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,900.58 : 116,900.52 = 27,979.62 : x
  2. Step 2: Convert to fraction form
    77,900.58/116,900.52 = 27,979.62/x
  3. Step 3: Cross multiply
    77,900.58x = 116,900.52 × 27,979.62
  4. Step 4: Simplify right side
    77,900.58x = 3,270,832,127.40
  5. Step 5: Solve for x
    x = 3,270,832,127.40/77,900.58
  6. Step 6: Final answer
    x = 41,987.26

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1.5x scale

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.