Home / 28,067,077.80-42,100,616.70-9,871,128.45

Finding the Fourth Proportional to 28,067,077.80, 42,100,616.70 and 9,871,128.45

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Solution

The fourth proportional to 28,067,077.80, 42,100,616.70 and 9,871,128.45 is: 14,806,692.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,067,077.80 : 42,100,616.70 = 9,871,128.45 : x
  2. Step 2: Convert to fraction form
    28,067,077.80/42,100,616.70 = 9,871,128.45/x
  3. Step 3: Cross multiply
    28,067,077.80x = 42,100,616.70 × 9,871,128.45
  4. Step 4: Simplify right side
    28,067,077.80x = 415,580,595,269,915.12
  5. Step 5: Solve for x
    x = 415,580,595,269,915.12/28,067,077.80
  6. Step 6: Final answer
    x = 14,806,692.68

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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.