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Finding the Fourth Proportional to 70,205.50, 105,326.69 and 25,231.40

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Solution

The fourth proportional to 70,205.50, 105,326.69 and 25,231.40 is: 37,853.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,205.50 : 105,326.69 = 25,231.40 : x
  2. Step 2: Convert to fraction form
    70,205.50/105,326.69 = 25,231.40/x
  3. Step 3: Cross multiply
    70,205.50x = 105,326.69 × 25,231.40
  4. Step 4: Simplify right side
    70,205.50x = 2,657,539,319.43
  5. Step 5: Solve for x
    x = 2,657,539,319.43/70,205.50
  6. Step 6: Final answer
    x = 37,853.72

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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.