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Finding the Fourth Proportional to 71,328.42, 107,015.01 and 42,898.11

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Solution

The fourth proportional to 71,328.42, 107,015.01 and 42,898.11 is: 64,360.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,328.42 : 107,015.01 = 42,898.11 : x
  2. Step 2: Convert to fraction form
    71,328.42/107,015.01 = 42,898.11/x
  3. Step 3: Cross multiply
    71,328.42x = 107,015.01 × 42,898.11
  4. Step 4: Simplify right side
    71,328.42x = 4,590,741,670.63
  5. Step 5: Solve for x
    x = 4,590,741,670.63/71,328.42
  6. Step 6: Final answer
    x = 64,360.62

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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.