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Finding the Fourth Proportional to 94,171.10, 129,978.53 and 53,908.11

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Solution

The fourth proportional to 94,171.10, 129,978.53 and 53,908.11 is: 74,406.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,171.10 : 129,978.53 = 53,908.11 : x
  2. Step 2: Convert to fraction form
    94,171.10/129,978.53 = 53,908.11/x
  3. Step 3: Cross multiply
    94,171.10x = 129,978.53 × 53,908.11
  4. Step 4: Simplify right side
    94,171.10x = 7,006,896,623.34
  5. Step 5: Solve for x
    x = 7,006,896,623.34/94,171.10
  6. Step 6: Final answer
    x = 74,406.02

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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.