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Finding the Fourth Proportional to 55,878.80, 83,810.10 and 16,431.80

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Solution

The fourth proportional to 55,878.80, 83,810.10 and 16,431.80 is: 24,645.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,878.80 : 83,810.10 = 16,431.80 : x
  2. Step 2: Convert to fraction form
    55,878.80/83,810.10 = 16,431.80/x
  3. Step 3: Cross multiply
    55,878.80x = 83,810.10 × 16,431.80
  4. Step 4: Simplify right side
    55,878.80x = 1,377,150,801.18
  5. Step 5: Solve for x
    x = 1,377,150,801.18/55,878.80
  6. Step 6: Final answer
    x = 24,645.32

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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.