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Finding the Fourth Proportional to 78,444.74, 108,256.12 and 48,247.80

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Solution

The fourth proportional to 78,444.74, 108,256.12 and 48,247.80 is: 66,583.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,444.74 : 108,256.12 = 48,247.80 : x
  2. Step 2: Convert to fraction form
    78,444.74/108,256.12 = 48,247.80/x
  3. Step 3: Cross multiply
    78,444.74x = 108,256.12 × 48,247.80
  4. Step 4: Simplify right side
    78,444.74x = 5,223,119,626.54
  5. Step 5: Solve for x
    x = 5,223,119,626.54/78,444.74
  6. Step 6: Final answer
    x = 66,583.43

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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.