Home / 39,930,153.72-55,103,611.50-21,595,439.16

Finding the Fourth Proportional to 39,930,153.72, 55,103,611.50 and 21,595,439.16

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Solution

The fourth proportional to 39,930,153.72, 55,103,611.50 and 21,595,439.16 is: 29,801,705.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,930,153.72 : 55,103,611.50 = 21,595,439.16 : x
  2. Step 2: Convert to fraction form
    39,930,153.72/55,103,611.50 = 21,595,439.16/x
  3. Step 3: Cross multiply
    39,930,153.72x = 55,103,611.50 × 21,595,439.16
  4. Step 4: Simplify right side
    39,930,153.72x = 1,189,986,689,644,526.25
  5. Step 5: Solve for x
    x = 1,189,986,689,644,526.25/39,930,153.72
  6. Step 6: Final answer
    x = 29,801,705.70

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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.