Home / 42,739.93-64,116.15-13,160.35

Finding the Fourth Proportional to 42,739.93, 64,116.15 and 13,160.35

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Solution

The fourth proportional to 42,739.93, 64,116.15 and 13,160.35 is: 19,742.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,739.93 : 64,116.15 = 13,160.35 : x
  2. Step 2: Convert to fraction form
    42,739.93/64,116.15 = 13,160.35/x
  3. Step 3: Cross multiply
    42,739.93x = 64,116.15 × 13,160.35
  4. Step 4: Simplify right side
    42,739.93x = 843,790,974.65
  5. Step 5: Solve for x
    x = 843,790,974.65/42,739.93
  6. Step 6: Final answer
    x = 19,742.45

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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.