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Finding the Fourth Proportional to 70,125.84, 105,185.18 and 25,749.18

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Solution

The fourth proportional to 70,125.84, 105,185.18 and 25,749.18 is: 38,622.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,125.84 : 105,185.18 = 25,749.18 : x
  2. Step 2: Convert to fraction form
    70,125.84/105,185.18 = 25,749.18/x
  3. Step 3: Cross multiply
    70,125.84x = 105,185.18 × 25,749.18
  4. Step 4: Simplify right side
    70,125.84x = 2,708,432,004.41
  5. Step 5: Solve for x
    x = 2,708,432,004.41/70,125.84
  6. Step 6: Final answer
    x = 38,622.45

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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.