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Finding the Fourth Proportional to 61,010.88, 91,519.53 and 18,920.04

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Solution

The fourth proportional to 61,010.88, 91,519.53 and 18,920.04 is: 28,381.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,010.88 : 91,519.53 = 18,920.04 : x
  2. Step 2: Convert to fraction form
    61,010.88/91,519.53 = 18,920.04/x
  3. Step 3: Cross multiply
    61,010.88x = 91,519.53 × 18,920.04
  4. Step 4: Simplify right side
    61,010.88x = 1,731,553,168.38
  5. Step 5: Solve for x
    x = 1,731,553,168.38/61,010.88
  6. Step 6: Final answer
    x = 28,381.06

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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.