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Finding the Fourth Proportional to 79,575.53, 109,777.41 and 47,689.07

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Solution

The fourth proportional to 79,575.53, 109,777.41 and 47,689.07 is: 65,788.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,575.53 : 109,777.41 = 47,689.07 : x
  2. Step 2: Convert to fraction form
    79,575.53/109,777.41 = 47,689.07/x
  3. Step 3: Cross multiply
    79,575.53x = 109,777.41 × 47,689.07
  4. Step 4: Simplify right side
    79,575.53x = 5,235,182,041.02
  5. Step 5: Solve for x
    x = 5,235,182,041.02/79,575.53
  6. Step 6: Final answer
    x = 65,788.85

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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.