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Finding the Fourth Proportional to 70,812.40, 106,218.60 and 49,615.60

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Solution

The fourth proportional to 70,812.40, 106,218.60 and 49,615.60 is: 74,423.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,812.40 : 106,218.60 = 49,615.60 : x
  2. Step 2: Convert to fraction form
    70,812.40/106,218.60 = 49,615.60/x
  3. Step 3: Cross multiply
    70,812.40x = 106,218.60 × 49,615.60
  4. Step 4: Simplify right side
    70,812.40x = 5,270,099,570.16
  5. Step 5: Solve for x
    x = 5,270,099,570.16/70,812.40
  6. Step 6: Final answer
    x = 74,423.40

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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.