Home / 42,786.60-64,156.74-19,400.28

Finding the Fourth Proportional to 42,786.60, 64,156.74 and 19,400.28

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Solution

The fourth proportional to 42,786.60, 64,156.74 and 19,400.28 is: 29,089.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,786.60 : 64,156.74 = 19,400.28 : x
  2. Step 2: Convert to fraction form
    42,786.60/64,156.74 = 19,400.28/x
  3. Step 3: Cross multiply
    42,786.60x = 64,156.74 × 19,400.28
  4. Step 4: Simplify right side
    42,786.60x = 1,244,658,719.89
  5. Step 5: Solve for x
    x = 1,244,658,719.89/42,786.60
  6. Step 6: Final answer
    x = 29,089.92

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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.