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Finding the Fourth Proportional to 71,810.02, 107,730.53 and 21,888.77

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Solution

The fourth proportional to 71,810.02, 107,730.53 and 21,888.77 is: 32,837.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,810.02 : 107,730.53 = 21,888.77 : x
  2. Step 2: Convert to fraction form
    71,810.02/107,730.53 = 21,888.77/x
  3. Step 3: Cross multiply
    71,810.02x = 107,730.53 × 21,888.77
  4. Step 4: Simplify right side
    71,810.02x = 2,358,088,683.70
  5. Step 5: Solve for x
    x = 2,358,088,683.70/71,810.02
  6. Step 6: Final answer
    x = 32,837.88

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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.