Home / 70,580.12-105,731.77-40,935.69

Finding the Fourth Proportional to 70,580.12, 105,731.77 and 40,935.69

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Solution

The fourth proportional to 70,580.12, 105,731.77 and 40,935.69 is: 61,323.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,580.12 : 105,731.77 = 40,935.69 : x
  2. Step 2: Convert to fraction form
    70,580.12/105,731.77 = 40,935.69/x
  3. Step 3: Cross multiply
    70,580.12x = 105,731.77 × 40,935.69
  4. Step 4: Simplify right side
    70,580.12x = 4,328,202,959.87
  5. Step 5: Solve for x
    x = 4,328,202,959.87/70,580.12
  6. Step 6: Final answer
    x = 61,323.26

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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.