Home / 42,878.42-64,317.65-17,904.86

Finding the Fourth Proportional to 42,878.42, 64,317.65 and 17,904.86

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Solution

The fourth proportional to 42,878.42, 64,317.65 and 17,904.86 is: 26,857.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,878.42 : 64,317.65 = 17,904.86 : x
  2. Step 2: Convert to fraction form
    42,878.42/64,317.65 = 17,904.86/x
  3. Step 3: Cross multiply
    42,878.42x = 64,317.65 × 17,904.86
  4. Step 4: Simplify right side
    42,878.42x = 1,151,598,107.67
  5. Step 5: Solve for x
    x = 1,151,598,107.67/42,878.42
  6. Step 6: Final answer
    x = 26,857.29

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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.