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Finding the Fourth Proportional to 51,008.60, 76,512.90 and 45,322.40

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Solution

The fourth proportional to 51,008.60, 76,512.90 and 45,322.40 is: 67,983.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,008.60 : 76,512.90 = 45,322.40 : x
  2. Step 2: Convert to fraction form
    51,008.60/76,512.90 = 45,322.40/x
  3. Step 3: Cross multiply
    51,008.60x = 76,512.90 × 45,322.40
  4. Step 4: Simplify right side
    51,008.60x = 3,467,748,258.96
  5. Step 5: Solve for x
    x = 3,467,748,258.96/51,008.60
  6. Step 6: Final answer
    x = 67,983.60

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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.