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Finding the Fourth Proportional to 67,639.88, 101,339.44 and 57,678.10

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Solution

The fourth proportional to 67,639.88, 101,339.44 and 57,678.10 is: 86,414.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,639.88 : 101,339.44 = 57,678.10 : x
  2. Step 2: Convert to fraction form
    67,639.88/101,339.44 = 57,678.10/x
  3. Step 3: Cross multiply
    67,639.88x = 101,339.44 × 57,678.10
  4. Step 4: Simplify right side
    67,639.88x = 5,845,066,354.26
  5. Step 5: Solve for x
    x = 5,845,066,354.26/67,639.88
  6. Step 6: Final answer
    x = 86,414.50

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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.