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Finding the Fourth Proportional to 73,276.40, 109,914.60 and 28,888.40

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Solution

The fourth proportional to 73,276.40, 109,914.60 and 28,888.40 is: 43,332.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,276.40 : 109,914.60 = 28,888.40 : x
  2. Step 2: Convert to fraction form
    73,276.40/109,914.60 = 28,888.40/x
  3. Step 3: Cross multiply
    73,276.40x = 109,914.60 × 28,888.40
  4. Step 4: Simplify right side
    73,276.40x = 3,175,256,930.64
  5. Step 5: Solve for x
    x = 3,175,256,930.64/73,276.40
  6. Step 6: Final answer
    x = 43,332.60

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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.