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Finding the Fourth Proportional to 40,978.68, 56,499.84 and 26,806.92

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Solution

The fourth proportional to 40,978.68, 56,499.84 and 26,806.92 is: 36,960.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,978.68 : 56,499.84 = 26,806.92 : x
  2. Step 2: Convert to fraction form
    40,978.68/56,499.84 = 26,806.92/x
  3. Step 3: Cross multiply
    40,978.68x = 56,499.84 × 26,806.92
  4. Step 4: Simplify right side
    40,978.68x = 1,514,586,690.89
  5. Step 5: Solve for x
    x = 1,514,586,690.89/40,978.68
  6. Step 6: Final answer
    x = 36,960.36

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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.