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Finding the Fourth Proportional to 91,751.66, 126,616.54 and 51,465.30

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Solution

The fourth proportional to 91,751.66, 126,616.54 and 51,465.30 is: 71,021.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,751.66 : 126,616.54 = 51,465.30 : x
  2. Step 2: Convert to fraction form
    91,751.66/126,616.54 = 51,465.30/x
  3. Step 3: Cross multiply
    91,751.66x = 126,616.54 × 51,465.30
  4. Step 4: Simplify right side
    91,751.66x = 6,516,358,216.06
  5. Step 5: Solve for x
    x = 6,516,358,216.06/91,751.66
  6. Step 6: Final answer
    x = 71,021.69

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1.5x scale

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.