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Finding the Fourth Proportional to 71,159.32, 106,090.37 and 69,341.68

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Solution

The fourth proportional to 71,159.32, 106,090.37 and 69,341.68 is: 103,380.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,159.32 : 106,090.37 = 69,341.68 : x
  2. Step 2: Convert to fraction form
    71,159.32/106,090.37 = 69,341.68/x
  3. Step 3: Cross multiply
    71,159.32x = 106,090.37 × 69,341.68
  4. Step 4: Simplify right side
    71,159.32x = 7,356,484,487.62
  5. Step 5: Solve for x
    x = 7,356,484,487.62/71,159.32
  6. Step 6: Final answer
    x = 103,380.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.