Home / 91,781.10-126,651.60-51,491.70

Finding the Fourth Proportional to 91,781.10, 126,651.60 and 51,491.70

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Solution

The fourth proportional to 91,781.10, 126,651.60 and 51,491.70 is: 71,055.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,781.10 : 126,651.60 = 51,491.70 : x
  2. Step 2: Convert to fraction form
    91,781.10/126,651.60 = 51,491.70/x
  3. Step 3: Cross multiply
    91,781.10x = 126,651.60 × 51,491.70
  4. Step 4: Simplify right side
    91,781.10x = 6,521,506,191.72
  5. Step 5: Solve for x
    x = 6,521,506,191.72/91,781.10
  6. Step 6: Final answer
    x = 71,055.00

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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.