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Finding the Fourth Proportional to 76,812.58, 106,003.30 and 42,826.60

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Solution

The fourth proportional to 76,812.58, 106,003.30 and 42,826.60 is: 59,101.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,812.58 : 106,003.30 = 42,826.60 : x
  2. Step 2: Convert to fraction form
    76,812.58/106,003.30 = 42,826.60/x
  3. Step 3: Cross multiply
    76,812.58x = 106,003.30 × 42,826.60
  4. Step 4: Simplify right side
    76,812.58x = 4,539,760,397.76
  5. Step 5: Solve for x
    x = 4,539,760,397.76/76,812.58
  6. Step 6: Final answer
    x = 59,101.79

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1.5x scale

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.