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Finding the Fourth Proportional to 70,430.88, 105,025.56 and 69,799.20

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Solution

The fourth proportional to 70,430.88, 105,025.56 and 69,799.20 is: 104,083.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,430.88 : 105,025.56 = 69,799.20 : x
  2. Step 2: Convert to fraction form
    70,430.88/105,025.56 = 69,799.20/x
  3. Step 3: Cross multiply
    70,430.88x = 105,025.56 × 69,799.20
  4. Step 4: Simplify right side
    70,430.88x = 7,330,700,067.55
  5. Step 5: Solve for x
    x = 7,330,700,067.55/70,430.88
  6. Step 6: Final answer
    x = 104,083.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.