Home / 5,138,948.81-7,091,981.73-2,847,109.50

Finding the Fourth Proportional to 5,138,948.81, 7,091,981.73 and 2,847,109.50

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Solution

The fourth proportional to 5,138,948.81, 7,091,981.73 and 2,847,109.50 is: 3,929,139.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138,948.81 : 7,091,981.73 = 2,847,109.50 : x
  2. Step 2: Convert to fraction form
    5,138,948.81/7,091,981.73 = 2,847,109.50/x
  3. Step 3: Cross multiply
    5,138,948.81x = 7,091,981.73 × 2,847,109.50
  4. Step 4: Simplify right side
    5,138,948.81x = 20,191,648,557,309.44
  5. Step 5: Solve for x
    x = 20,191,648,557,309.44/5,138,948.81
  6. Step 6: Final answer
    x = 3,929,139.85

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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.