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Finding the Fourth Proportional to 76,620.32, 105,700.56 and 44,790.56

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Solution

The fourth proportional to 76,620.32, 105,700.56 and 44,790.56 is: 61,790.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,620.32 : 105,700.56 = 44,790.56 : x
  2. Step 2: Convert to fraction form
    76,620.32/105,700.56 = 44,790.56/x
  3. Step 3: Cross multiply
    76,620.32x = 105,700.56 × 44,790.56
  4. Step 4: Simplify right side
    76,620.32x = 4,734,387,274.71
  5. Step 5: Solve for x
    x = 4,734,387,274.71/76,620.32
  6. Step 6: Final answer
    x = 61,790.23

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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.