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Finding the Fourth Proportional to 43,351.60, 64,984.20 and 19,937.20

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Solution

The fourth proportional to 43,351.60, 64,984.20 and 19,937.20 is: 29,885.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,351.60 : 64,984.20 = 19,937.20 : x
  2. Step 2: Convert to fraction form
    43,351.60/64,984.20 = 19,937.20/x
  3. Step 3: Cross multiply
    43,351.60x = 64,984.20 × 19,937.20
  4. Step 4: Simplify right side
    43,351.60x = 1,295,602,992.24
  5. Step 5: Solve for x
    x = 1,295,602,992.24/43,351.60
  6. Step 6: Final answer
    x = 29,885.93

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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.