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Finding the Fourth Proportional to 70,400.76, 97,154.99 and 40,191

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Solution

The fourth proportional to 70,400.76, 97,154.99 and 40,191 is: 55,464.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,400.76 : 97,154.99 = 40,191 : x
  2. Step 2: Convert to fraction form
    70,400.76/97,154.99 = 40,191/x
  3. Step 3: Cross multiply
    70,400.76x = 97,154.99 × 40,191
  4. Step 4: Simplify right side
    70,400.76x = 3,904,756,203.09
  5. Step 5: Solve for x
    x = 3,904,756,203.09/70,400.76
  6. Step 6: Final answer
    x = 55,464.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.