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Finding the Fourth Proportional to 91,382.88, 126,055.80 and 53,649.84

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Solution

The fourth proportional to 91,382.88, 126,055.80 and 53,649.84 is: 74,005.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,382.88 : 126,055.80 = 53,649.84 : x
  2. Step 2: Convert to fraction form
    91,382.88/126,055.80 = 53,649.84/x
  3. Step 3: Cross multiply
    91,382.88x = 126,055.80 × 53,649.84
  4. Step 4: Simplify right side
    91,382.88x = 6,762,873,501.07
  5. Step 5: Solve for x
    x = 6,762,873,501.07/91,382.88
  6. Step 6: Final answer
    x = 74,005.91

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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.