Home / 70,540.09-105,829.73-28,410.31

Finding the Fourth Proportional to 70,540.09, 105,829.73 and 28,410.31

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Solution

The fourth proportional to 70,540.09, 105,829.73 and 28,410.31 is: 42,623.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,540.09 : 105,829.73 = 28,410.31 : x
  2. Step 2: Convert to fraction form
    70,540.09/105,829.73 = 28,410.31/x
  3. Step 3: Cross multiply
    70,540.09x = 105,829.73 × 28,410.31
  4. Step 4: Simplify right side
    70,540.09x = 3,006,655,046.87
  5. Step 5: Solve for x
    x = 3,006,655,046.87/70,540.09
  6. Step 6: Final answer
    x = 42,623.35

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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.