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Finding the Fourth Proportional to 93,651.84, 129,385.08 and 78,521.04

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Solution

The fourth proportional to 93,651.84, 129,385.08 and 78,521.04 is: 108,481.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,651.84 : 129,385.08 = 78,521.04 : x
  2. Step 2: Convert to fraction form
    93,651.84/129,385.08 = 78,521.04/x
  3. Step 3: Cross multiply
    93,651.84x = 129,385.08 × 78,521.04
  4. Step 4: Simplify right side
    93,651.84x = 10,159,451,042.08
  5. Step 5: Solve for x
    x = 10,159,451,042.08/93,651.84
  6. Step 6: Final answer
    x = 108,481.06

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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.