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Finding the Fourth Proportional to 74,887.44, 111,649.76 and 66,472.88

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Solution

The fourth proportional to 74,887.44, 111,649.76 and 66,472.88 is: 99,104.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,887.44 : 111,649.76 = 66,472.88 : x
  2. Step 2: Convert to fraction form
    74,887.44/111,649.76 = 66,472.88/x
  3. Step 3: Cross multiply
    74,887.44x = 111,649.76 × 66,472.88
  4. Step 4: Simplify right side
    74,887.44x = 7,421,681,098.51
  5. Step 5: Solve for x
    x = 7,421,681,098.51/74,887.44
  6. Step 6: Final answer
    x = 99,104.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.