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Finding the Fourth Proportional to 73,927, 102,021.78 and 40,395.16

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Solution

The fourth proportional to 73,927, 102,021.78 and 40,395.16 is: 55,746.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,927 : 102,021.78 = 40,395.16 : x
  2. Step 2: Convert to fraction form
    73,927/102,021.78 = 40,395.16/x
  3. Step 3: Cross multiply
    73,927x = 102,021.78 × 40,395.16
  4. Step 4: Simplify right side
    73,927x = 4,121,186,126.58
  5. Step 5: Solve for x
    x = 4,121,186,126.58/73,927
  6. Step 6: Final answer
    x = 55,746.70

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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.