Home / 76,370.28-105,403.58-42,389.73

Finding the Fourth Proportional to 76,370.28, 105,403.58 and 42,389.73

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Solution

The fourth proportional to 76,370.28, 105,403.58 and 42,389.73 is: 58,504.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,370.28 : 105,403.58 = 42,389.73 : x
  2. Step 2: Convert to fraction form
    76,370.28/105,403.58 = 42,389.73/x
  3. Step 3: Cross multiply
    76,370.28x = 105,403.58 × 42,389.73
  4. Step 4: Simplify right side
    76,370.28x = 4,468,029,085.28
  5. Step 5: Solve for x
    x = 4,468,029,085.28/76,370.28
  6. Step 6: Final answer
    x = 58,504.81

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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.