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Finding the Fourth Proportional to 145,245, 217,867.50 and 46,749

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Solution

The fourth proportional to 145,245, 217,867.50 and 46,749 is: 70,123.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,245 : 217,867.50 = 46,749 : x
  2. Step 2: Convert to fraction form
    145,245/217,867.50 = 46,749/x
  3. Step 3: Cross multiply
    145,245x = 217,867.50 × 46,749
  4. Step 4: Simplify right side
    145,245x = 10,185,087,757.50
  5. Step 5: Solve for x
    x = 10,185,087,757.50/145,245
  6. Step 6: Final answer
    x = 70,123.50

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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.