Home / 61,305.05-91,962.84-16,931.80

Finding the Fourth Proportional to 61,305.05, 91,962.84 and 16,931.80

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Solution

The fourth proportional to 61,305.05, 91,962.84 and 16,931.80 is: 25,399.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,305.05 : 91,962.84 = 16,931.80 : x
  2. Step 2: Convert to fraction form
    61,305.05/91,962.84 = 16,931.80/x
  3. Step 3: Cross multiply
    61,305.05x = 91,962.84 × 16,931.80
  4. Step 4: Simplify right side
    61,305.05x = 1,557,096,592.76
  5. Step 5: Solve for x
    x = 1,557,096,592.76/61,305.05
  6. Step 6: Final answer
    x = 25,399.16

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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.