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Finding the Fourth Proportional to 92,862.75, 128,150.00 and 50,421.29

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Solution

The fourth proportional to 92,862.75, 128,150.00 and 50,421.29 is: 69,581.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,862.75 : 128,150.00 = 50,421.29 : x
  2. Step 2: Convert to fraction form
    92,862.75/128,150.00 = 50,421.29/x
  3. Step 3: Cross multiply
    92,862.75x = 128,150.00 × 50,421.29
  4. Step 4: Simplify right side
    92,862.75x = 6,461,487,609.72
  5. Step 5: Solve for x
    x = 6,461,487,609.72/92,862.75
  6. Step 6: Final answer
    x = 69,581.05

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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.