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Finding the Fourth Proportional to 70,328.95, 105,482.05 and 25,976.59

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Solution

The fourth proportional to 70,328.95, 105,482.05 and 25,976.59 is: 38,960.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,328.95 : 105,482.05 = 25,976.59 : x
  2. Step 2: Convert to fraction form
    70,328.95/105,482.05 = 25,976.59/x
  3. Step 3: Cross multiply
    70,328.95x = 105,482.05 × 25,976.59
  4. Step 4: Simplify right side
    70,328.95x = 2,740,063,636.56
  5. Step 5: Solve for x
    x = 2,740,063,636.56/70,328.95
  6. Step 6: Final answer
    x = 38,960.68

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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.