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Finding the Fourth Proportional to 61,084.98, 91,641.81 and 18,962.90

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Solution

The fourth proportional to 61,084.98, 91,641.81 and 18,962.90 is: 28,448.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,084.98 : 91,641.81 = 18,962.90 : x
  2. Step 2: Convert to fraction form
    61,084.98/91,641.81 = 18,962.90/x
  3. Step 3: Cross multiply
    61,084.98x = 91,641.81 × 18,962.90
  4. Step 4: Simplify right side
    61,084.98x = 1,737,794,478.85
  5. Step 5: Solve for x
    x = 1,737,794,478.85/61,084.98
  6. Step 6: Final answer
    x = 28,448.80

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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.