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Finding the Fourth Proportional to 63,307.88, 87,340.36 and 40,640.84

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Solution

The fourth proportional to 63,307.88, 87,340.36 and 40,640.84 is: 56,068.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,307.88 : 87,340.36 = 40,640.84 : x
  2. Step 2: Convert to fraction form
    63,307.88/87,340.36 = 40,640.84/x
  3. Step 3: Cross multiply
    63,307.88x = 87,340.36 × 40,640.84
  4. Step 4: Simplify right side
    63,307.88x = 3,549,585,596.30
  5. Step 5: Solve for x
    x = 3,549,585,596.30/63,307.88
  6. Step 6: Final answer
    x = 56,068.62

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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.