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Finding the Fourth Proportional to 56,959.45, 78,708.23 and 49,381.45

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Solution

The fourth proportional to 56,959.45, 78,708.23 and 49,381.45 is: 68,236.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,959.45 : 78,708.23 = 49,381.45 : x
  2. Step 2: Convert to fraction form
    56,959.45/78,708.23 = 49,381.45/x
  3. Step 3: Cross multiply
    56,959.45x = 78,708.23 × 49,381.45
  4. Step 4: Simplify right side
    56,959.45x = 3,886,726,277.43
  5. Step 5: Solve for x
    x = 3,886,726,277.43/56,959.45
  6. Step 6: Final answer
    x = 68,236.72

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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.