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Finding the Fourth Proportional to 70,550.78, 97,375.12 and 42,272.88

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Solution

The fourth proportional to 70,550.78, 97,375.12 and 42,272.88 is: 58,345.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,550.78 : 97,375.12 = 42,272.88 : x
  2. Step 2: Convert to fraction form
    70,550.78/97,375.12 = 42,272.88/x
  3. Step 3: Cross multiply
    70,550.78x = 97,375.12 × 42,272.88
  4. Step 4: Simplify right side
    70,550.78x = 4,116,326,762.75
  5. Step 5: Solve for x
    x = 4,116,326,762.75/70,550.78
  6. Step 6: Final answer
    x = 58,345.59

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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.