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Finding the Fourth Proportional to 74,492.43, 102,801.57 and 40,503.20

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Solution

The fourth proportional to 74,492.43, 102,801.57 and 40,503.20 is: 55,895.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,492.43 : 102,801.57 = 40,503.20 : x
  2. Step 2: Convert to fraction form
    74,492.43/102,801.57 = 40,503.20/x
  3. Step 3: Cross multiply
    74,492.43x = 102,801.57 × 40,503.20
  4. Step 4: Simplify right side
    74,492.43x = 4,163,792,690.22
  5. Step 5: Solve for x
    x = 4,163,792,690.22/74,492.43
  6. Step 6: Final answer
    x = 55,895.51

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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.