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Finding the Fourth Proportional to 70,326.60, 105,490.34 and 28,773.60

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Solution

The fourth proportional to 70,326.60, 105,490.34 and 28,773.60 is: 43,160.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,326.60 : 105,490.34 = 28,773.60 : x
  2. Step 2: Convert to fraction form
    70,326.60/105,490.34 = 28,773.60/x
  3. Step 3: Cross multiply
    70,326.60x = 105,490.34 × 28,773.60
  4. Step 4: Simplify right side
    70,326.60x = 3,035,336,847.02
  5. Step 5: Solve for x
    x = 3,035,336,847.02/70,326.60
  6. Step 6: Final answer
    x = 43,160.58

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1.5x scale

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.