Home / 43,120.61-64,690.62-13,137.51

Finding the Fourth Proportional to 43,120.61, 64,690.62 and 13,137.51

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Solution

The fourth proportional to 43,120.61, 64,690.62 and 13,137.51 is: 19,709.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,120.61 : 64,690.62 = 13,137.51 : x
  2. Step 2: Convert to fraction form
    43,120.61/64,690.62 = 13,137.51/x
  3. Step 3: Cross multiply
    43,120.61x = 64,690.62 × 13,137.51
  4. Step 4: Simplify right side
    43,120.61x = 849,873,667.16
  5. Step 5: Solve for x
    x = 849,873,667.16/43,120.61
  6. Step 6: Final answer
    x = 19,709.22

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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.