Home / 77,742.24-107,024.86-74,171.48

Finding the Fourth Proportional to 77,742.24, 107,024.86 and 74,171.48

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Solution

The fourth proportional to 77,742.24, 107,024.86 and 74,171.48 is: 102,109.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,742.24 : 107,024.86 = 74,171.48 : x
  2. Step 2: Convert to fraction form
    77,742.24/107,024.86 = 74,171.48/x
  3. Step 3: Cross multiply
    77,742.24x = 107,024.86 × 74,171.48
  4. Step 4: Simplify right side
    77,742.24x = 7,938,192,262.99
  5. Step 5: Solve for x
    x = 7,938,192,262.99/77,742.24
  6. Step 6: Final answer
    x = 102,109.13

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1.5x scale

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.