Home / 40,701.20-61,051.80-28,891.40

Finding the Fourth Proportional to 40,701.20, 61,051.80 and 28,891.40

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Solution

The fourth proportional to 40,701.20, 61,051.80 and 28,891.40 is: 43,337.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,701.20 : 61,051.80 = 28,891.40 : x
  2. Step 2: Convert to fraction form
    40,701.20/61,051.80 = 28,891.40/x
  3. Step 3: Cross multiply
    40,701.20x = 61,051.80 × 28,891.40
  4. Step 4: Simplify right side
    40,701.20x = 1,763,871,974.52
  5. Step 5: Solve for x
    x = 1,763,871,974.52/40,701.20
  6. Step 6: Final answer
    x = 43,337.10

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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.