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Finding the Fourth Proportional to 35,605.95, 49,140.86 and 20,499.25

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Solution

The fourth proportional to 35,605.95, 49,140.86 and 20,499.25 is: 28,291.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,605.95 : 49,140.86 = 20,499.25 : x
  2. Step 2: Convert to fraction form
    35,605.95/49,140.86 = 20,499.25/x
  3. Step 3: Cross multiply
    35,605.95x = 49,140.86 × 20,499.25
  4. Step 4: Simplify right side
    35,605.95x = 1,007,350,981.14
  5. Step 5: Solve for x
    x = 1,007,350,981.14/35,605.95
  6. Step 6: Final answer
    x = 28,291.64

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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.