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Finding the Fourth Proportional to 51,044.50, 70,441.41 and 28,688.50

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Solution

The fourth proportional to 51,044.50, 70,441.41 and 28,688.50 is: 39,590.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,044.50 : 70,441.41 = 28,688.50 : x
  2. Step 2: Convert to fraction form
    51,044.50/70,441.41 = 28,688.50/x
  3. Step 3: Cross multiply
    51,044.50x = 70,441.41 × 28,688.50
  4. Step 4: Simplify right side
    51,044.50x = 2,020,858,390.79
  5. Step 5: Solve for x
    x = 2,020,858,390.79/51,044.50
  6. Step 6: Final answer
    x = 39,590.13

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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.