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Finding the Fourth Proportional to 70,259.13, 105,388.83 and 28,706.13

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Solution

The fourth proportional to 70,259.13, 105,388.83 and 28,706.13 is: 43,059.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,259.13 : 105,388.83 = 28,706.13 : x
  2. Step 2: Convert to fraction form
    70,259.13/105,388.83 = 28,706.13/x
  3. Step 3: Cross multiply
    70,259.13x = 105,388.83 × 28,706.13
  4. Step 4: Simplify right side
    70,259.13x = 3,025,305,454.53
  5. Step 5: Solve for x
    x = 3,025,305,454.53/70,259.13
  6. Step 6: Final answer
    x = 43,059.25

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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.