Home / 55,309.12-76,328.16-30,160

Finding the Fourth Proportional to 55,309.12, 76,328.16 and 30,160

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Solution

The fourth proportional to 55,309.12, 76,328.16 and 30,160 is: 41,621.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,309.12 : 76,328.16 = 30,160 : x
  2. Step 2: Convert to fraction form
    55,309.12/76,328.16 = 30,160/x
  3. Step 3: Cross multiply
    55,309.12x = 76,328.16 × 30,160
  4. Step 4: Simplify right side
    55,309.12x = 2,302,057,305.60
  5. Step 5: Solve for x
    x = 2,302,057,305.60/55,309.12
  6. Step 6: Final answer
    x = 41,621.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.