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Finding the Fourth Proportional to 52,842.54, 79,240.77 and 19,987.50

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Solution

The fourth proportional to 52,842.54, 79,240.77 and 19,987.50 is: 29,972.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,842.54 : 79,240.77 = 19,987.50 : x
  2. Step 2: Convert to fraction form
    52,842.54/79,240.77 = 19,987.50/x
  3. Step 3: Cross multiply
    52,842.54x = 79,240.77 × 19,987.50
  4. Step 4: Simplify right side
    52,842.54x = 1,583,824,890.38
  5. Step 5: Solve for x
    x = 1,583,824,890.38/52,842.54
  6. Step 6: Final answer
    x = 29,972.54

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1.5x scale

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.