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Finding the Fourth Proportional to 58,220.01, 87,321.51 and 28,629.90

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Solution

The fourth proportional to 58,220.01, 87,321.51 and 28,629.90 is: 42,940.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,220.01 : 87,321.51 = 28,629.90 : x
  2. Step 2: Convert to fraction form
    58,220.01/87,321.51 = 28,629.90/x
  3. Step 3: Cross multiply
    58,220.01x = 87,321.51 × 28,629.90
  4. Step 4: Simplify right side
    58,220.01x = 2,500,006,099.15
  5. Step 5: Solve for x
    x = 2,500,006,099.15/58,220.01
  6. Step 6: Final answer
    x = 42,940.67

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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.