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Finding the Fourth Proportional to 111,561.04, 153,954.76 and 61,260

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Solution

The fourth proportional to 111,561.04, 153,954.76 and 61,260 is: 84,539.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,561.04 : 153,954.76 = 61,260 : x
  2. Step 2: Convert to fraction form
    111,561.04/153,954.76 = 61,260/x
  3. Step 3: Cross multiply
    111,561.04x = 153,954.76 × 61,260
  4. Step 4: Simplify right side
    111,561.04x = 9,431,268,597.60
  5. Step 5: Solve for x
    x = 9,431,268,597.60/111,561.04
  6. Step 6: Final answer
    x = 84,539.09

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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.