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Finding the Fourth Proportional to 63,669.40, 95,479.80 and 19,281.40

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Solution

The fourth proportional to 63,669.40, 95,479.80 and 19,281.40 is: 28,914.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,669.40 : 95,479.80 = 19,281.40 : x
  2. Step 2: Convert to fraction form
    63,669.40/95,479.80 = 19,281.40/x
  3. Step 3: Cross multiply
    63,669.40x = 95,479.80 × 19,281.40
  4. Step 4: Simplify right side
    63,669.40x = 1,840,984,215.72
  5. Step 5: Solve for x
    x = 1,840,984,215.72/63,669.40
  6. Step 6: Final answer
    x = 28,914.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.