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Finding the Fourth Proportional to 35,781.79, 49,378.98 and 19,866.28

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Solution

The fourth proportional to 35,781.79, 49,378.98 and 19,866.28 is: 27,415.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,781.79 : 49,378.98 = 19,866.28 : x
  2. Step 2: Convert to fraction form
    35,781.79/49,378.98 = 19,866.28/x
  3. Step 3: Cross multiply
    35,781.79x = 49,378.98 × 19,866.28
  4. Step 4: Simplify right side
    35,781.79x = 980,976,642.79
  5. Step 5: Solve for x
    x = 980,976,642.79/35,781.79
  6. Step 6: Final answer
    x = 27,415.53

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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.