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Finding the Fourth Proportional to 70,549.78, 97,343.49 and 40,724.50

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Solution

The fourth proportional to 70,549.78, 97,343.49 and 40,724.50 is: 56,191.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,549.78 : 97,343.49 = 40,724.50 : x
  2. Step 2: Convert to fraction form
    70,549.78/97,343.49 = 40,724.50/x
  3. Step 3: Cross multiply
    70,549.78x = 97,343.49 × 40,724.50
  4. Step 4: Simplify right side
    70,549.78x = 3,964,264,958.51
  5. Step 5: Solve for x
    x = 3,964,264,958.51/70,549.78
  6. Step 6: Final answer
    x = 56,191.03

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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.