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Finding the Fourth Proportional to 55,289.66, 76,249.13 and 40,985.12

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Solution

The fourth proportional to 55,289.66, 76,249.13 and 40,985.12 is: 56,521.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,289.66 : 76,249.13 = 40,985.12 : x
  2. Step 2: Convert to fraction form
    55,289.66/76,249.13 = 40,985.12/x
  3. Step 3: Cross multiply
    55,289.66x = 76,249.13 × 40,985.12
  4. Step 4: Simplify right side
    55,289.66x = 3,125,079,728.64
  5. Step 5: Solve for x
    x = 3,125,079,728.64/55,289.66
  6. Step 6: Final answer
    x = 56,521.96

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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.