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Finding the Fourth Proportional to 74,333.60, 102,578.60 and 40,340.63

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Solution

The fourth proportional to 74,333.60, 102,578.60 and 40,340.63 is: 55,669.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,333.60 : 102,578.60 = 40,340.63 : x
  2. Step 2: Convert to fraction form
    74,333.60/102,578.60 = 40,340.63/x
  3. Step 3: Cross multiply
    74,333.60x = 102,578.60 × 40,340.63
  4. Step 4: Simplify right side
    74,333.60x = 4,138,085,146.81
  5. Step 5: Solve for x
    x = 4,138,085,146.81/74,333.60
  6. Step 6: Final answer
    x = 55,669.11

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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.