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Finding the Fourth Proportional to 73,200.90, 109,801.35 and 28,812.90

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Solution

The fourth proportional to 73,200.90, 109,801.35 and 28,812.90 is: 43,219.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,200.90 : 109,801.35 = 28,812.90 : x
  2. Step 2: Convert to fraction form
    73,200.90/109,801.35 = 28,812.90/x
  3. Step 3: Cross multiply
    73,200.90x = 109,801.35 × 28,812.90
  4. Step 4: Simplify right side
    73,200.90x = 3,163,695,317.42
  5. Step 5: Solve for x
    x = 3,163,695,317.42/73,200.90
  6. Step 6: Final answer
    x = 43,219.35

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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.