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Finding the Fourth Proportional to 68,993.47, 95,219.79 and 42,130.32

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Solution

The fourth proportional to 68,993.47, 95,219.79 and 42,130.32 is: 58,145.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,993.47 : 95,219.79 = 42,130.32 : x
  2. Step 2: Convert to fraction form
    68,993.47/95,219.79 = 42,130.32/x
  3. Step 3: Cross multiply
    68,993.47x = 95,219.79 × 42,130.32
  4. Step 4: Simplify right side
    68,993.47x = 4,011,640,012.38
  5. Step 5: Solve for x
    x = 4,011,640,012.38/68,993.47
  6. Step 6: Final answer
    x = 58,145.22

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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.