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Finding the Fourth Proportional to 58,769.20, 88,144.80 and 19,326.40

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Solution

The fourth proportional to 58,769.20, 88,144.80 and 19,326.40 is: 28,986.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,769.20 : 88,144.80 = 19,326.40 : x
  2. Step 2: Convert to fraction form
    58,769.20/88,144.80 = 19,326.40/x
  3. Step 3: Cross multiply
    58,769.20x = 88,144.80 × 19,326.40
  4. Step 4: Simplify right side
    58,769.20x = 1,703,521,662.72
  5. Step 5: Solve for x
    x = 1,703,521,662.72/58,769.20
  6. Step 6: Final answer
    x = 28,986.64

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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.