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Finding the Fourth Proportional to 70,640.69, 97,489.62 and 40,435.49

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Solution

The fourth proportional to 70,640.69, 97,489.62 and 40,435.49 is: 55,804.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,640.69 : 97,489.62 = 40,435.49 : x
  2. Step 2: Convert to fraction form
    70,640.69/97,489.62 = 40,435.49/x
  3. Step 3: Cross multiply
    70,640.69x = 97,489.62 × 40,435.49
  4. Step 4: Simplify right side
    70,640.69x = 3,942,040,798.34
  5. Step 5: Solve for x
    x = 3,942,040,798.34/70,640.69
  6. Step 6: Final answer
    x = 55,804.11

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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.