Home / 79,521.13-109,693.40-47,671.53

Finding the Fourth Proportional to 79,521.13, 109,693.40 and 47,671.53

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Solution

The fourth proportional to 79,521.13, 109,693.40 and 47,671.53 is: 65,759.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,521.13 : 109,693.40 = 47,671.53 : x
  2. Step 2: Convert to fraction form
    79,521.13/109,693.40 = 47,671.53/x
  3. Step 3: Cross multiply
    79,521.13x = 109,693.40 × 47,671.53
  4. Step 4: Simplify right side
    79,521.13x = 5,229,252,208.90
  5. Step 5: Solve for x
    x = 5,229,252,208.90/79,521.13
  6. Step 6: Final answer
    x = 65,759.28

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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.