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Finding the Fourth Proportional to 111,572.43, 153,969.84 and 61,271.43

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Solution

The fourth proportional to 111,572.43, 153,969.84 and 61,271.43 is: 84,554.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,572.43 : 153,969.84 = 61,271.43 : x
  2. Step 2: Convert to fraction form
    111,572.43/153,969.84 = 61,271.43/x
  3. Step 3: Cross multiply
    111,572.43x = 153,969.84 × 61,271.43
  4. Step 4: Simplify right side
    111,572.43x = 9,433,952,273.67
  5. Step 5: Solve for x
    x = 9,433,952,273.67/111,572.43
  6. Step 6: Final answer
    x = 84,554.51

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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.