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Finding the Fourth Proportional to 69,913, 96,463.20 and 40,836.88

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Solution

The fourth proportional to 69,913, 96,463.20 and 40,836.88 is: 56,345.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,913 : 96,463.20 = 40,836.88 : x
  2. Step 2: Convert to fraction form
    69,913/96,463.20 = 40,836.88/x
  3. Step 3: Cross multiply
    69,913x = 96,463.20 × 40,836.88
  4. Step 4: Simplify right side
    69,913x = 3,939,256,122.82
  5. Step 5: Solve for x
    x = 3,939,256,122.82/69,913
  6. Step 6: Final answer
    x = 56,345.12

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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.