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Finding the Fourth Proportional to 104,725.47, 144,522.63 and 56,978.85

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Solution

The fourth proportional to 104,725.47, 144,522.63 and 56,978.85 is: 78,631.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,725.47 : 144,522.63 = 56,978.85 : x
  2. Step 2: Convert to fraction form
    104,725.47/144,522.63 = 56,978.85/x
  3. Step 3: Cross multiply
    104,725.47x = 144,522.63 × 56,978.85
  4. Step 4: Simplify right side
    104,725.47x = 8,234,733,256.38
  5. Step 5: Solve for x
    x = 8,234,733,256.38/104,725.47
  6. Step 6: Final answer
    x = 78,631.62

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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.