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Finding the Fourth Proportional to 79,161.84, 109,252.80 and 48,967.20

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Solution

The fourth proportional to 79,161.84, 109,252.80 and 48,967.20 is: 67,580.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,161.84 : 109,252.80 = 48,967.20 : x
  2. Step 2: Convert to fraction form
    79,161.84/109,252.80 = 48,967.20/x
  3. Step 3: Cross multiply
    79,161.84x = 109,252.80 × 48,967.20
  4. Step 4: Simplify right side
    79,161.84x = 5,349,803,708.16
  5. Step 5: Solve for x
    x = 5,349,803,708.16/79,161.84
  6. Step 6: Final answer
    x = 67,580.59

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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.