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Finding the Fourth Proportional to 74,103.75, 102,263.18 and 40,569.75

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Solution

The fourth proportional to 74,103.75, 102,263.18 and 40,569.75 is: 55,986.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,103.75 : 102,263.18 = 40,569.75 : x
  2. Step 2: Convert to fraction form
    74,103.75/102,263.18 = 40,569.75/x
  3. Step 3: Cross multiply
    74,103.75x = 102,263.18 × 40,569.75
  4. Step 4: Simplify right side
    74,103.75x = 4,148,791,646.81
  5. Step 5: Solve for x
    x = 4,148,791,646.81/74,103.75
  6. Step 6: Final answer
    x = 55,986.26

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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.