Home / 76,215.16-105,228.24-47,578.42

Finding the Fourth Proportional to 76,215.16, 105,228.24 and 47,578.42

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Solution

The fourth proportional to 76,215.16, 105,228.24 and 47,578.42 is: 65,690.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,215.16 : 105,228.24 = 47,578.42 : x
  2. Step 2: Convert to fraction form
    76,215.16/105,228.24 = 47,578.42/x
  3. Step 3: Cross multiply
    76,215.16x = 105,228.24 × 47,578.42
  4. Step 4: Simplify right side
    76,215.16x = 5,006,593,398.58
  5. Step 5: Solve for x
    x = 5,006,593,398.58/76,215.16
  6. Step 6: Final answer
    x = 65,690.26

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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.