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Finding the Fourth Proportional to 74,348.84, 102,597.90 and 40,356.56

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Solution

The fourth proportional to 74,348.84, 102,597.90 and 40,356.56 is: 55,690.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,348.84 : 102,597.90 = 40,356.56 : x
  2. Step 2: Convert to fraction form
    74,348.84/102,597.90 = 40,356.56/x
  3. Step 3: Cross multiply
    74,348.84x = 102,597.90 × 40,356.56
  4. Step 4: Simplify right side
    74,348.84x = 4,140,498,307.22
  5. Step 5: Solve for x
    x = 4,140,498,307.22/74,348.84
  6. Step 6: Final answer
    x = 55,690.15

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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.