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Finding the Fourth Proportional to 58,102.40, 87,211.20 and 28,553.60

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Solution

The fourth proportional to 58,102.40, 87,211.20 and 28,553.60 is: 42,858.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,102.40 : 87,211.20 = 28,553.60 : x
  2. Step 2: Convert to fraction form
    58,102.40/87,211.20 = 28,553.60/x
  3. Step 3: Cross multiply
    58,102.40x = 87,211.20 × 28,553.60
  4. Step 4: Simplify right side
    58,102.40x = 2,490,193,720.32
  5. Step 5: Solve for x
    x = 2,490,193,720.32/58,102.40
  6. Step 6: Final answer
    x = 42,858.71

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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.