Home / 68,426.52-102,642.66-21,678.36

Finding the Fourth Proportional to 68,426.52, 102,642.66 and 21,678.36

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Solution

The fourth proportional to 68,426.52, 102,642.66 and 21,678.36 is: 32,518.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,426.52 : 102,642.66 = 21,678.36 : x
  2. Step 2: Convert to fraction form
    68,426.52/102,642.66 = 21,678.36/x
  3. Step 3: Cross multiply
    68,426.52x = 102,642.66 × 21,678.36
  4. Step 4: Simplify right side
    68,426.52x = 2,225,124,534.84
  5. Step 5: Solve for x
    x = 2,225,124,534.84/68,426.52
  6. Step 6: Final answer
    x = 32,518.45

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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.