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Finding the Fourth Proportional to 73,153.60, 109,664.70 and 28,810.60

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Solution

The fourth proportional to 73,153.60, 109,664.70 and 28,810.60 is: 43,190.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,153.60 : 109,664.70 = 28,810.60 : x
  2. Step 2: Convert to fraction form
    73,153.60/109,664.70 = 28,810.60/x
  3. Step 3: Cross multiply
    73,153.60x = 109,664.70 × 28,810.60
  4. Step 4: Simplify right side
    73,153.60x = 3,159,505,805.82
  5. Step 5: Solve for x
    x = 3,159,505,805.82/73,153.60
  6. Step 6: Final answer
    x = 43,190.02

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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.