Home / 28,190,761.60-42,281,995.20-7,998,044.80

Finding the Fourth Proportional to 28,190,761.60, 42,281,995.20 and 7,998,044.80

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Solution

The fourth proportional to 28,190,761.60, 42,281,995.20 and 7,998,044.80 is: 11,995,890.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,190,761.60 : 42,281,995.20 = 7,998,044.80 : x
  2. Step 2: Convert to fraction form
    28,190,761.60/42,281,995.20 = 7,998,044.80/x
  3. Step 3: Cross multiply
    28,190,761.60x = 42,281,995.20 × 7,998,044.80
  4. Step 4: Simplify right side
    28,190,761.60x = 338,173,291,842,985
  5. Step 5: Solve for x
    x = 338,173,291,842,985/28,190,761.60
  6. Step 6: Final answer
    x = 11,995,890.59

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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.