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Finding the Fourth Proportional to 70,090.80, 105,167 and 36,803.16

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Solution

The fourth proportional to 70,090.80, 105,167 and 36,803.16 is: 55,220.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,090.80 : 105,167 = 36,803.16 : x
  2. Step 2: Convert to fraction form
    70,090.80/105,167 = 36,803.16/x
  3. Step 3: Cross multiply
    70,090.80x = 105,167 × 36,803.16
  4. Step 4: Simplify right side
    70,090.80x = 3,870,477,927.72
  5. Step 5: Solve for x
    x = 3,870,477,927.72/70,090.80
  6. Step 6: Final answer
    x = 55,220.91

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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.