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Finding the Fourth Proportional to 51,008.40, 76,437.90 and 45,743.40

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Solution

The fourth proportional to 51,008.40, 76,437.90 and 45,743.40 is: 68,548.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,008.40 : 76,437.90 = 45,743.40 : x
  2. Step 2: Convert to fraction form
    51,008.40/76,437.90 = 45,743.40/x
  3. Step 3: Cross multiply
    51,008.40x = 76,437.90 × 45,743.40
  4. Step 4: Simplify right side
    51,008.40x = 3,496,529,434.86
  5. Step 5: Solve for x
    x = 3,496,529,434.86/51,008.40
  6. Step 6: Final answer
    x = 68,548.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.