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Finding the Fourth Proportional to 70,397.58, 97,155.63 and 40,187.44

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Solution

The fourth proportional to 70,397.58, 97,155.63 and 40,187.44 is: 55,462.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,397.58 : 97,155.63 = 40,187.44 : x
  2. Step 2: Convert to fraction form
    70,397.58/97,155.63 = 40,187.44/x
  3. Step 3: Cross multiply
    70,397.58x = 97,155.63 × 40,187.44
  4. Step 4: Simplify right side
    70,397.58x = 3,904,436,051.29
  5. Step 5: Solve for x
    x = 3,904,436,051.29/70,397.58
  6. Step 6: Final answer
    x = 55,462.65

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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.