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Finding the Fourth Proportional to 70,574.38, 105,905.46 and 43,972.60

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Solution

The fourth proportional to 70,574.38, 105,905.46 and 43,972.60 is: 65,986.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,574.38 : 105,905.46 = 43,972.60 : x
  2. Step 2: Convert to fraction form
    70,574.38/105,905.46 = 43,972.60/x
  3. Step 3: Cross multiply
    70,574.38x = 105,905.46 × 43,972.60
  4. Step 4: Simplify right side
    70,574.38x = 4,656,938,430.40
  5. Step 5: Solve for x
    x = 4,656,938,430.40/70,574.38
  6. Step 6: Final answer
    x = 65,986.25

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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.