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Finding the Fourth Proportional to 76,358.38, 105,475.50 and 63,653.08

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Solution

The fourth proportional to 76,358.38, 105,475.50 and 63,653.08 is: 87,925.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,358.38 : 105,475.50 = 63,653.08 : x
  2. Step 2: Convert to fraction form
    76,358.38/105,475.50 = 63,653.08/x
  3. Step 3: Cross multiply
    76,358.38x = 105,475.50 × 63,653.08
  4. Step 4: Simplify right side
    76,358.38x = 6,713,840,439.54
  5. Step 5: Solve for x
    x = 6,713,840,439.54/76,358.38
  6. Step 6: Final answer
    x = 87,925.39

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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.