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Finding the Fourth Proportional to 70,263.45, 105,436.35 and 25,921.08

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Solution

The fourth proportional to 70,263.45, 105,436.35 and 25,921.08 is: 38,896.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,263.45 : 105,436.35 = 25,921.08 : x
  2. Step 2: Convert to fraction form
    70,263.45/105,436.35 = 25,921.08/x
  3. Step 3: Cross multiply
    70,263.45x = 105,436.35 × 25,921.08
  4. Step 4: Simplify right side
    70,263.45x = 2,733,024,063.26
  5. Step 5: Solve for x
    x = 2,733,024,063.26/70,263.45
  6. Step 6: Final answer
    x = 38,896.81

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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.