Home / 91,918.08-126,885.78-56,120.94

Finding the Fourth Proportional to 91,918.08, 126,885.78 and 56,120.94

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Solution

The fourth proportional to 91,918.08, 126,885.78 and 56,120.94 is: 77,470.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,918.08 : 126,885.78 = 56,120.94 : x
  2. Step 2: Convert to fraction form
    91,918.08/126,885.78 = 56,120.94/x
  3. Step 3: Cross multiply
    91,918.08x = 126,885.78 × 56,120.94
  4. Step 4: Simplify right side
    91,918.08x = 7,120,949,246.23
  5. Step 5: Solve for x
    x = 7,120,949,246.23/91,918.08
  6. Step 6: Final answer
    x = 77,470.60

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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.