Home / 77,514.40-106,968.72-43,979.68

Finding the Fourth Proportional to 77,514.40, 106,968.72 and 43,979.68

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Solution

The fourth proportional to 77,514.40, 106,968.72 and 43,979.68 is: 60,691.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,514.40 : 106,968.72 = 43,979.68 : x
  2. Step 2: Convert to fraction form
    77,514.40/106,968.72 = 43,979.68/x
  3. Step 3: Cross multiply
    77,514.40x = 106,968.72 × 43,979.68
  4. Step 4: Simplify right side
    77,514.40x = 4,704,450,075.61
  5. Step 5: Solve for x
    x = 4,704,450,075.61/77,514.40
  6. Step 6: Final answer
    x = 60,691.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.