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Finding the Fourth Proportional to 74,361.69, 102,616.07 and 40,368.87

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Solution

The fourth proportional to 74,361.69, 102,616.07 and 40,368.87 is: 55,707.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,361.69 : 102,616.07 = 40,368.87 : x
  2. Step 2: Convert to fraction form
    74,361.69/102,616.07 = 40,368.87/x
  3. Step 3: Cross multiply
    74,361.69x = 102,616.07 × 40,368.87
  4. Step 4: Simplify right side
    74,361.69x = 4,142,494,587.90
  5. Step 5: Solve for x
    x = 4,142,494,587.90/74,361.69
  6. Step 6: Final answer
    x = 55,707.38

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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.