Home / 74,157.05-102,336.69-40,165.53

Finding the Fourth Proportional to 74,157.05, 102,336.69 and 40,165.53

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Solution

The fourth proportional to 74,157.05, 102,336.69 and 40,165.53 is: 55,428.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,157.05 : 102,336.69 = 40,165.53 : x
  2. Step 2: Convert to fraction form
    74,157.05/102,336.69 = 40,165.53/x
  3. Step 3: Cross multiply
    74,157.05x = 102,336.69 × 40,165.53
  4. Step 4: Simplify right side
    74,157.05x = 4,110,406,880.61
  5. Step 5: Solve for x
    x = 4,110,406,880.61/74,157.05
  6. Step 6: Final answer
    x = 55,428.40

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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.