Home / 51,354.08-70,866.05-28,688.57

Finding the Fourth Proportional to 51,354.08, 70,866.05 and 28,688.57

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Solution

The fourth proportional to 51,354.08, 70,866.05 and 28,688.57 is: 39,588.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,354.08 : 70,866.05 = 28,688.57 : x
  2. Step 2: Convert to fraction form
    51,354.08/70,866.05 = 28,688.57/x
  3. Step 3: Cross multiply
    51,354.08x = 70,866.05 × 28,688.57
  4. Step 4: Simplify right side
    51,354.08x = 2,033,045,138.28
  5. Step 5: Solve for x
    x = 2,033,045,138.28/51,354.08
  6. Step 6: Final answer
    x = 39,588.78

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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.