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Finding the Fourth Proportional to 51,535.80, 77,266.80 and 19,918.80

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Solution

The fourth proportional to 51,535.80, 77,266.80 and 19,918.80 is: 29,863.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,535.80 : 77,266.80 = 19,918.80 : x
  2. Step 2: Convert to fraction form
    51,535.80/77,266.80 = 19,918.80/x
  3. Step 3: Cross multiply
    51,535.80x = 77,266.80 × 19,918.80
  4. Step 4: Simplify right side
    51,535.80x = 1,539,061,935.84
  5. Step 5: Solve for x
    x = 1,539,061,935.84/51,535.80
  6. Step 6: Final answer
    x = 29,863.94

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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.