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Finding the Fourth Proportional to 76,104.64, 105,000.60 and 45,899.20

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Solution

The fourth proportional to 76,104.64, 105,000.60 and 45,899.20 is: 63,326.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,104.64 : 105,000.60 = 45,899.20 : x
  2. Step 2: Convert to fraction form
    76,104.64/105,000.60 = 45,899.20/x
  3. Step 3: Cross multiply
    76,104.64x = 105,000.60 × 45,899.20
  4. Step 4: Simplify right side
    76,104.64x = 4,819,443,539.52
  5. Step 5: Solve for x
    x = 4,819,443,539.52/76,104.64
  6. Step 6: Final answer
    x = 63,326.54

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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.