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Finding the Fourth Proportional to 70,528.40, 105,718.80 and 23,765.12

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Solution

The fourth proportional to 70,528.40, 105,718.80 and 23,765.12 is: 35,622.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,528.40 : 105,718.80 = 23,765.12 : x
  2. Step 2: Convert to fraction form
    70,528.40/105,718.80 = 23,765.12/x
  3. Step 3: Cross multiply
    70,528.40x = 105,718.80 × 23,765.12
  4. Step 4: Simplify right side
    70,528.40x = 2,512,419,968.26
  5. Step 5: Solve for x
    x = 2,512,419,968.26/70,528.40
  6. Step 6: Final answer
    x = 35,622.81

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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.