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Finding the Fourth Proportional to 51,219.40, 76,829.10 and 43,346.20

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Solution

The fourth proportional to 51,219.40, 76,829.10 and 43,346.20 is: 65,019.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,219.40 : 76,829.10 = 43,346.20 : x
  2. Step 2: Convert to fraction form
    51,219.40/76,829.10 = 43,346.20/x
  3. Step 3: Cross multiply
    51,219.40x = 76,829.10 × 43,346.20
  4. Step 4: Simplify right side
    51,219.40x = 3,330,249,534.42
  5. Step 5: Solve for x
    x = 3,330,249,534.42/51,219.40
  6. Step 6: Final answer
    x = 65,019.30

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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.