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Finding the Fourth Proportional to 70,578.66, 97,392.56 and 40,354.32

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Solution

The fourth proportional to 70,578.66, 97,392.56 and 40,354.32 is: 55,685.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,578.66 : 97,392.56 = 40,354.32 : x
  2. Step 2: Convert to fraction form
    70,578.66/97,392.56 = 40,354.32/x
  3. Step 3: Cross multiply
    70,578.66x = 97,392.56 × 40,354.32
  4. Step 4: Simplify right side
    70,578.66x = 3,930,210,531.86
  5. Step 5: Solve for x
    x = 3,930,210,531.86/70,578.66
  6. Step 6: Final answer
    x = 55,685.54

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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.