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Finding the Fourth Proportional to 35,903.72, 49,541.30 and 19,987.80

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Solution

The fourth proportional to 35,903.72, 49,541.30 and 19,987.80 is: 27,579.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,903.72 : 49,541.30 = 19,987.80 : x
  2. Step 2: Convert to fraction form
    35,903.72/49,541.30 = 19,987.80/x
  3. Step 3: Cross multiply
    35,903.72x = 49,541.30 × 19,987.80
  4. Step 4: Simplify right side
    35,903.72x = 990,221,596.14
  5. Step 5: Solve for x
    x = 990,221,596.14/35,903.72
  6. Step 6: Final answer
    x = 27,579.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.