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Finding the Fourth Proportional to 35,773.59, 53,643.10 and 20,987.31

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Solution

The fourth proportional to 35,773.59, 53,643.10 and 20,987.31 is: 31,470.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,773.59 : 53,643.10 = 20,987.31 : x
  2. Step 2: Convert to fraction form
    35,773.59/53,643.10 = 20,987.31/x
  3. Step 3: Cross multiply
    35,773.59x = 53,643.10 × 20,987.31
  4. Step 4: Simplify right side
    35,773.59x = 1,125,824,369.06
  5. Step 5: Solve for x
    x = 1,125,824,369.06/35,773.59
  6. Step 6: Final answer
    x = 31,470.82

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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.