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Finding the Fourth Proportional to 71,570.15, 100,336.45 and 71,570.15

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Solution

The fourth proportional to 71,570.15, 100,336.45 and 71,570.15 is: 100,336.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,570.15 : 100,336.45 = 71,570.15 : x
  2. Step 2: Convert to fraction form
    71,570.15/100,336.45 = 71,570.15/x
  3. Step 3: Cross multiply
    71,570.15x = 100,336.45 × 71,570.15
  4. Step 4: Simplify right side
    71,570.15x = 7,181,094,776.97
  5. Step 5: Solve for x
    x = 7,181,094,776.97/71,570.15
  6. Step 6: Final answer
    x = 100,336.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.