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Finding the Fourth Proportional to 51,130.60, 76,695.90 and 48,900.20

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Solution

The fourth proportional to 51,130.60, 76,695.90 and 48,900.20 is: 73,350.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,130.60 : 76,695.90 = 48,900.20 : x
  2. Step 2: Convert to fraction form
    51,130.60/76,695.90 = 48,900.20/x
  3. Step 3: Cross multiply
    51,130.60x = 76,695.90 × 48,900.20
  4. Step 4: Simplify right side
    51,130.60x = 3,750,444,849.18
  5. Step 5: Solve for x
    x = 3,750,444,849.18/51,130.60
  6. Step 6: Final answer
    x = 73,350.30

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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.