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Finding the Fourth Proportional to 71,603.88, 98,814.91 and 39,338.91

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Solution

The fourth proportional to 71,603.88, 98,814.91 and 39,338.91 is: 54,288.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,603.88 : 98,814.91 = 39,338.91 : x
  2. Step 2: Convert to fraction form
    71,603.88/98,814.91 = 39,338.91/x
  3. Step 3: Cross multiply
    71,603.88x = 98,814.91 × 39,338.91
  4. Step 4: Simplify right side
    71,603.88x = 3,887,270,851.15
  5. Step 5: Solve for x
    x = 3,887,270,851.15/71,603.88
  6. Step 6: Final answer
    x = 54,288.55

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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.