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Finding the Fourth Proportional to 71,009.57, 106,528.94 and 28,889.55

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Solution

The fourth proportional to 71,009.57, 106,528.94 and 28,889.55 is: 43,340.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,009.57 : 106,528.94 = 28,889.55 : x
  2. Step 2: Convert to fraction form
    71,009.57/106,528.94 = 28,889.55/x
  3. Step 3: Cross multiply
    71,009.57x = 106,528.94 × 28,889.55
  4. Step 4: Simplify right side
    71,009.57x = 3,077,572,994.13
  5. Step 5: Solve for x
    x = 3,077,572,994.13/71,009.57
  6. Step 6: Final answer
    x = 43,340.26

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1.5x scale

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.