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Finding the Fourth Proportional to 99,889.02, 137,851.03 and 57,447.58

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Solution

The fourth proportional to 99,889.02, 137,851.03 and 57,447.58 is: 79,280.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,889.02 : 137,851.03 = 57,447.58 : x
  2. Step 2: Convert to fraction form
    99,889.02/137,851.03 = 57,447.58/x
  3. Step 3: Cross multiply
    99,889.02x = 137,851.03 × 57,447.58
  4. Step 4: Simplify right side
    99,889.02x = 7,919,208,074.01
  5. Step 5: Solve for x
    x = 7,919,208,074.01/99,889.02
  6. Step 6: Final answer
    x = 79,280.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.