Home / 47,721.77-71,577.18-12,664.16

Finding the Fourth Proportional to 47,721.77, 71,577.18 and 12,664.16

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Solution

The fourth proportional to 47,721.77, 71,577.18 and 12,664.16 is: 18,994.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,721.77 : 71,577.18 = 12,664.16 : x
  2. Step 2: Convert to fraction form
    47,721.77/71,577.18 = 12,664.16/x
  3. Step 3: Cross multiply
    47,721.77x = 71,577.18 × 12,664.16
  4. Step 4: Simplify right side
    47,721.77x = 906,464,501.98
  5. Step 5: Solve for x
    x = 906,464,501.98/47,721.77
  6. Step 6: Final answer
    x = 18,994.78

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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.