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Finding the Fourth Proportional to 68,646.10, 102,859.80 and 50,931.40

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Solution

The fourth proportional to 68,646.10, 102,859.80 and 50,931.40 is: 76,315.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,646.10 : 102,859.80 = 50,931.40 : x
  2. Step 2: Convert to fraction form
    68,646.10/102,859.80 = 50,931.40/x
  3. Step 3: Cross multiply
    68,646.10x = 102,859.80 × 50,931.40
  4. Step 4: Simplify right side
    68,646.10x = 5,238,793,617.72
  5. Step 5: Solve for x
    x = 5,238,793,617.72/68,646.10
  6. Step 6: Final answer
    x = 76,315.97

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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.