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Finding the Fourth Proportional to 58,330.60, 87,438.30 and 28,724.20

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Solution

The fourth proportional to 58,330.60, 87,438.30 and 28,724.20 is: 43,057.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,330.60 : 87,438.30 = 28,724.20 : x
  2. Step 2: Convert to fraction form
    58,330.60/87,438.30 = 28,724.20/x
  3. Step 3: Cross multiply
    58,330.60x = 87,438.30 × 28,724.20
  4. Step 4: Simplify right side
    58,330.60x = 2,511,595,216.86
  5. Step 5: Solve for x
    x = 2,511,595,216.86/58,330.60
  6. Step 6: Final answer
    x = 43,057.94

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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.