Home / 90,213.66-124,436.79-61,934.94

Finding the Fourth Proportional to 90,213.66, 124,436.79 and 61,934.94

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Solution

The fourth proportional to 90,213.66, 124,436.79 and 61,934.94 is: 85,430.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,213.66 : 124,436.79 = 61,934.94 : x
  2. Step 2: Convert to fraction form
    90,213.66/124,436.79 = 61,934.94/x
  3. Step 3: Cross multiply
    90,213.66x = 124,436.79 × 61,934.94
  4. Step 4: Simplify right side
    90,213.66x = 7,706,985,122.44
  5. Step 5: Solve for x
    x = 7,706,985,122.44/90,213.66
  6. Step 6: Final answer
    x = 85,430.36

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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.