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Finding the Fourth Proportional to 104,724.54, 144,520.47 and 56,978.21

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Solution

The fourth proportional to 104,724.54, 144,520.47 and 56,978.21 is: 78,630.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,724.54 : 144,520.47 = 56,978.21 : x
  2. Step 2: Convert to fraction form
    104,724.54/144,520.47 = 56,978.21/x
  3. Step 3: Cross multiply
    104,724.54x = 144,520.47 × 56,978.21
  4. Step 4: Simplify right side
    104,724.54x = 8,234,518,050.26
  5. Step 5: Solve for x
    x = 8,234,518,050.26/104,724.54
  6. Step 6: Final answer
    x = 78,630.26

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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.