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Finding the Fourth Proportional to 71,065.56, 106,598.40 and 18,470.64

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Solution

The fourth proportional to 71,065.56, 106,598.40 and 18,470.64 is: 27,705.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,065.56 : 106,598.40 = 18,470.64 : x
  2. Step 2: Convert to fraction form
    71,065.56/106,598.40 = 18,470.64/x
  3. Step 3: Cross multiply
    71,065.56x = 106,598.40 × 18,470.64
  4. Step 4: Simplify right side
    71,065.56x = 1,968,940,670.98
  5. Step 5: Solve for x
    x = 1,968,940,670.98/71,065.56
  6. Step 6: Final answer
    x = 27,705.98

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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.