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Finding the Fourth Proportional to 35,288.70, 52,954.98 and 21,987.80

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Solution

The fourth proportional to 35,288.70, 52,954.98 and 21,987.80 is: 32,995.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,288.70 : 52,954.98 = 21,987.80 : x
  2. Step 2: Convert to fraction form
    35,288.70/52,954.98 = 21,987.80/x
  3. Step 3: Cross multiply
    35,288.70x = 52,954.98 × 21,987.80
  4. Step 4: Simplify right side
    35,288.70x = 1,164,363,509.24
  5. Step 5: Solve for x
    x = 1,164,363,509.24/35,288.70
  6. Step 6: Final answer
    x = 32,995.36

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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.