Home / 72,637.36-108,953.08-20,045.50

Finding the Fourth Proportional to 72,637.36, 108,953.08 and 20,045.50

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Solution

The fourth proportional to 72,637.36, 108,953.08 and 20,045.50 is: 30,067.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,637.36 : 108,953.08 = 20,045.50 : x
  2. Step 2: Convert to fraction form
    72,637.36/108,953.08 = 20,045.50/x
  3. Step 3: Cross multiply
    72,637.36x = 108,953.08 × 20,045.50
  4. Step 4: Simplify right side
    72,637.36x = 2,184,018,965.14
  5. Step 5: Solve for x
    x = 2,184,018,965.14/72,637.36
  6. Step 6: Final answer
    x = 30,067.43

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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.