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Finding the Fourth Proportional to 92,059.40, 138,102.76 and 28,884.72

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Solution

The fourth proportional to 92,059.40, 138,102.76 and 28,884.72 is: 43,331.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,059.40 : 138,102.76 = 28,884.72 : x
  2. Step 2: Convert to fraction form
    92,059.40/138,102.76 = 28,884.72/x
  3. Step 3: Cross multiply
    92,059.40x = 138,102.76 × 28,884.72
  4. Step 4: Simplify right side
    92,059.40x = 3,989,059,553.83
  5. Step 5: Solve for x
    x = 3,989,059,553.83/92,059.40
  6. Step 6: Final answer
    x = 43,331.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.