Home / 70,403.22-105,468.73-39,143.70

Finding the Fourth Proportional to 70,403.22, 105,468.73 and 39,143.70

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Solution

The fourth proportional to 70,403.22, 105,468.73 and 39,143.70 is: 58,639.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,403.22 : 105,468.73 = 39,143.70 : x
  2. Step 2: Convert to fraction form
    70,403.22/105,468.73 = 39,143.70/x
  3. Step 3: Cross multiply
    70,403.22x = 105,468.73 × 39,143.70
  4. Step 4: Simplify right side
    70,403.22x = 4,128,436,326.50
  5. Step 5: Solve for x
    x = 4,128,436,326.50/70,403.22
  6. Step 6: Final answer
    x = 58,639.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.