Home / 28,080,543.40-42,120,815.10-18,338,770.60

Finding the Fourth Proportional to 28,080,543.40, 42,120,815.10 and 18,338,770.60

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Solution

The fourth proportional to 28,080,543.40, 42,120,815.10 and 18,338,770.60 is: 27,508,155.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,080,543.40 : 42,120,815.10 = 18,338,770.60 : x
  2. Step 2: Convert to fraction form
    28,080,543.40/42,120,815.10 = 18,338,770.60/x
  3. Step 3: Cross multiply
    28,080,543.40x = 42,120,815.10 × 18,338,770.60
  4. Step 4: Simplify right side
    28,080,543.40x = 772,443,965,603,916.12
  5. Step 5: Solve for x
    x = 772,443,965,603,916.12/28,080,543.40
  6. Step 6: Final answer
    x = 27,508,155.90

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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.