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Finding the Fourth Proportional to 91,448.92, 126,203.10 and 53,722.84

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Solution

The fourth proportional to 91,448.92, 126,203.10 and 53,722.84 is: 74,139.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,448.92 : 126,203.10 = 53,722.84 : x
  2. Step 2: Convert to fraction form
    91,448.92/126,203.10 = 53,722.84/x
  3. Step 3: Cross multiply
    91,448.92x = 126,203.10 × 53,722.84
  4. Step 4: Simplify right side
    91,448.92x = 6,779,988,948.80
  5. Step 5: Solve for x
    x = 6,779,988,948.80/91,448.92
  6. Step 6: Final answer
    x = 74,139.63

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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.