Home / 28,085,856.30-42,035,472.45-20,387,616.30

Finding the Fourth Proportional to 28,085,856.30, 42,035,472.45 and 20,387,616.30

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Solution

The fourth proportional to 28,085,856.30, 42,035,472.45 and 20,387,616.30 is: 30,513,688.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085,856.30 : 42,035,472.45 = 20,387,616.30 : x
  2. Step 2: Convert to fraction form
    28,085,856.30/42,035,472.45 = 20,387,616.30/x
  3. Step 3: Cross multiply
    28,085,856.30x = 42,035,472.45 × 20,387,616.30
  4. Step 4: Simplify right side
    28,085,856.30x = 857,003,083,299,821
  5. Step 5: Solve for x
    x = 857,003,083,299,821/28,085,856.30
  6. Step 6: Final answer
    x = 30,513,688.96

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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.