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Finding the Fourth Proportional to 51,219.80, 76,829.70 and 48,303.80

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Solution

The fourth proportional to 51,219.80, 76,829.70 and 48,303.80 is: 72,455.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,219.80 : 76,829.70 = 48,303.80 : x
  2. Step 2: Convert to fraction form
    51,219.80/76,829.70 = 48,303.80/x
  3. Step 3: Cross multiply
    51,219.80x = 76,829.70 × 48,303.80
  4. Step 4: Simplify right side
    51,219.80x = 3,711,166,462.86
  5. Step 5: Solve for x
    x = 3,711,166,462.86/51,219.80
  6. Step 6: Final answer
    x = 72,455.70

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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.