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Finding the Fourth Proportional to 79,236.74, 109,345.74 and 42,937.40

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Solution

The fourth proportional to 79,236.74, 109,345.74 and 42,937.40 is: 59,253.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,236.74 : 109,345.74 = 42,937.40 : x
  2. Step 2: Convert to fraction form
    79,236.74/109,345.74 = 42,937.40/x
  3. Step 3: Cross multiply
    79,236.74x = 109,345.74 × 42,937.40
  4. Step 4: Simplify right side
    79,236.74x = 4,695,021,776.68
  5. Step 5: Solve for x
    x = 4,695,021,776.68/79,236.74
  6. Step 6: Final answer
    x = 59,253.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.