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Finding the Fourth Proportional to 91,234.56, 125,898.88 and 51,488

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Solution

The fourth proportional to 91,234.56, 125,898.88 and 51,488 is: 71,050.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,234.56 : 125,898.88 = 51,488 : x
  2. Step 2: Convert to fraction form
    91,234.56/125,898.88 = 51,488/x
  3. Step 3: Cross multiply
    91,234.56x = 125,898.88 × 51,488
  4. Step 4: Simplify right side
    91,234.56x = 6,482,281,533.44
  5. Step 5: Solve for x
    x = 6,482,281,533.44/91,234.56
  6. Step 6: Final answer
    x = 71,050.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.