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Finding the Fourth Proportional to 58,285.80, 87,234.30 and 51,287.40

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Solution

The fourth proportional to 58,285.80, 87,234.30 and 51,287.40 is: 76,760.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,285.80 : 87,234.30 = 51,287.40 : x
  2. Step 2: Convert to fraction form
    58,285.80/87,234.30 = 51,287.40/x
  3. Step 3: Cross multiply
    58,285.80x = 87,234.30 × 51,287.40
  4. Step 4: Simplify right side
    58,285.80x = 4,474,020,437.82
  5. Step 5: Solve for x
    x = 4,474,020,437.82/58,285.80
  6. Step 6: Final answer
    x = 76,760.04

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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.