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Finding the Fourth Proportional to 99,047.01, 136,684.07 and 53,724.88

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Solution

The fourth proportional to 99,047.01, 136,684.07 and 53,724.88 is: 74,139.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,047.01 : 136,684.07 = 53,724.88 : x
  2. Step 2: Convert to fraction form
    99,047.01/136,684.07 = 53,724.88/x
  3. Step 3: Cross multiply
    99,047.01x = 136,684.07 × 53,724.88
  4. Step 4: Simplify right side
    99,047.01x = 7,343,334,575.24
  5. Step 5: Solve for x
    x = 7,343,334,575.24/99,047.01
  6. Step 6: Final answer
    x = 74,139.89

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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.