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Finding the Fourth Proportional to 105,292.80, 157,800.88 and 49,904.64

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Solution

The fourth proportional to 105,292.80, 157,800.88 and 49,904.64 is: 74,791.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,292.80 : 157,800.88 = 49,904.64 : x
  2. Step 2: Convert to fraction form
    105,292.80/157,800.88 = 49,904.64/x
  3. Step 3: Cross multiply
    105,292.80x = 157,800.88 × 49,904.64
  4. Step 4: Simplify right side
    105,292.80x = 7,874,996,108.08
  5. Step 5: Solve for x
    x = 7,874,996,108.08/105,292.80
  6. Step 6: Final answer
    x = 74,791.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.