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Finding the Fourth Proportional to 75,069.72, 103,580.64 and 43,230.24

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Solution

The fourth proportional to 75,069.72, 103,580.64 and 43,230.24 is: 59,648.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,069.72 : 103,580.64 = 43,230.24 : x
  2. Step 2: Convert to fraction form
    75,069.72/103,580.64 = 43,230.24/x
  3. Step 3: Cross multiply
    75,069.72x = 103,580.64 × 43,230.24
  4. Step 4: Simplify right side
    75,069.72x = 4,477,815,926.55
  5. Step 5: Solve for x
    x = 4,477,815,926.55/75,069.72
  6. Step 6: Final answer
    x = 59,648.76

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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.