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Finding the Fourth Proportional to 93,751.76, 129,242.88 and 66,847.64

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Solution

The fourth proportional to 93,751.76, 129,242.88 and 66,847.64 is: 92,153.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,751.76 : 129,242.88 = 66,847.64 : x
  2. Step 2: Convert to fraction form
    93,751.76/129,242.88 = 66,847.64/x
  3. Step 3: Cross multiply
    93,751.76x = 129,242.88 × 66,847.64
  4. Step 4: Simplify right side
    93,751.76x = 8,639,581,514.80
  5. Step 5: Solve for x
    x = 8,639,581,514.80/93,751.76
  6. Step 6: Final answer
    x = 92,153.81

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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.