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Finding the Fourth Proportional to 45,812.80, 68,762.40 and 39,246.40

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Solution

The fourth proportional to 45,812.80, 68,762.40 and 39,246.40 is: 58,906.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,812.80 : 68,762.40 = 39,246.40 : x
  2. Step 2: Convert to fraction form
    45,812.80/68,762.40 = 39,246.40/x
  3. Step 3: Cross multiply
    45,812.80x = 68,762.40 × 39,246.40
  4. Step 4: Simplify right side
    45,812.80x = 2,698,676,655.36
  5. Step 5: Solve for x
    x = 2,698,676,655.36/45,812.80
  6. Step 6: Final answer
    x = 58,906.61

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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.