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Finding the Fourth Proportional to 70,333.16, 105,465.70 and 25,980.80

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Solution

The fourth proportional to 70,333.16, 105,465.70 and 25,980.80 is: 38,958.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,333.16 : 105,465.70 = 25,980.80 : x
  2. Step 2: Convert to fraction form
    70,333.16/105,465.70 = 25,980.80/x
  3. Step 3: Cross multiply
    70,333.16x = 105,465.70 × 25,980.80
  4. Step 4: Simplify right side
    70,333.16x = 2,740,083,258.56
  5. Step 5: Solve for x
    x = 2,740,083,258.56/70,333.16
  6. Step 6: Final answer
    x = 38,958.63

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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.