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Finding the Fourth Proportional to 47,679.98, 71,520.48 and 14,400.32

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Solution

The fourth proportional to 47,679.98, 71,520.48 and 14,400.32 is: 21,600.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,679.98 : 71,520.48 = 14,400.32 : x
  2. Step 2: Convert to fraction form
    47,679.98/71,520.48 = 14,400.32/x
  3. Step 3: Cross multiply
    47,679.98x = 71,520.48 × 14,400.32
  4. Step 4: Simplify right side
    47,679.98x = 1,029,917,798.55
  5. Step 5: Solve for x
    x = 1,029,917,798.55/47,679.98
  6. Step 6: Final answer
    x = 21,600.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.