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Finding the Fourth Proportional to 68,717.94, 103,545.07 and 56,511.42

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Solution

The fourth proportional to 68,717.94, 103,545.07 and 56,511.42 is: 85,152.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,717.94 : 103,545.07 = 56,511.42 : x
  2. Step 2: Convert to fraction form
    68,717.94/103,545.07 = 56,511.42/x
  3. Step 3: Cross multiply
    68,717.94x = 103,545.07 × 56,511.42
  4. Step 4: Simplify right side
    68,717.94x = 5,851,478,939.70
  5. Step 5: Solve for x
    x = 5,851,478,939.70/68,717.94
  6. Step 6: Final answer
    x = 85,152.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.