Home / 74,071.64-102,218.13-40,079.39

Finding the Fourth Proportional to 74,071.64, 102,218.13 and 40,079.39

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Solution

The fourth proportional to 74,071.64, 102,218.13 and 40,079.39 is: 55,309.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,071.64 : 102,218.13 = 40,079.39 : x
  2. Step 2: Convert to fraction form
    74,071.64/102,218.13 = 40,079.39/x
  3. Step 3: Cross multiply
    74,071.64x = 102,218.13 × 40,079.39
  4. Step 4: Simplify right side
    74,071.64x = 4,096,840,297.34
  5. Step 5: Solve for x
    x = 4,096,840,297.34/74,071.64
  6. Step 6: Final answer
    x = 55,309.16

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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.