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Finding the Fourth Proportional to 79,417.74, 109,523.28 and 53,962.20

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Solution

The fourth proportional to 79,417.74, 109,523.28 and 53,962.20 is: 74,418.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,417.74 : 109,523.28 = 53,962.20 : x
  2. Step 2: Convert to fraction form
    79,417.74/109,523.28 = 53,962.20/x
  3. Step 3: Cross multiply
    79,417.74x = 109,523.28 × 53,962.20
  4. Step 4: Simplify right side
    79,417.74x = 5,910,117,140.02
  5. Step 5: Solve for x
    x = 5,910,117,140.02/79,417.74
  6. Step 6: Final answer
    x = 74,418.10

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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.