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Finding the Fourth Proportional to 74,438.28, 102,741.04 and 45,782.58

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Solution

The fourth proportional to 74,438.28, 102,741.04 and 45,782.58 is: 63,189.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,438.28 : 102,741.04 = 45,782.58 : x
  2. Step 2: Convert to fraction form
    74,438.28/102,741.04 = 45,782.58/x
  3. Step 3: Cross multiply
    74,438.28x = 102,741.04 × 45,782.58
  4. Step 4: Simplify right side
    74,438.28x = 4,703,749,883.08
  5. Step 5: Solve for x
    x = 4,703,749,883.08/74,438.28
  6. Step 6: Final answer
    x = 63,189.93

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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.