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Finding the Fourth Proportional to 84,019.60, 115,916.52 and 50,038.48

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Solution

The fourth proportional to 84,019.60, 115,916.52 and 50,038.48 is: 69,034.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,019.60 : 115,916.52 = 50,038.48 : x
  2. Step 2: Convert to fraction form
    84,019.60/115,916.52 = 50,038.48/x
  3. Step 3: Cross multiply
    84,019.60x = 115,916.52 × 50,038.48
  4. Step 4: Simplify right side
    84,019.60x = 5,800,286,467.69
  5. Step 5: Solve for x
    x = 5,800,286,467.69/84,019.60
  6. Step 6: Final answer
    x = 69,034.92

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1.5x scale

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.