Home / 55,176.34-76,138.09-30,971.76

Finding the Fourth Proportional to 55,176.34, 76,138.09 and 30,971.76

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Solution

The fourth proportional to 55,176.34, 76,138.09 and 30,971.76 is: 42,738.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,176.34 : 76,138.09 = 30,971.76 : x
  2. Step 2: Convert to fraction form
    55,176.34/76,138.09 = 30,971.76/x
  3. Step 3: Cross multiply
    55,176.34x = 76,138.09 × 30,971.76
  4. Step 4: Simplify right side
    55,176.34x = 2,358,130,114.79
  5. Step 5: Solve for x
    x = 2,358,130,114.79/55,176.34
  6. Step 6: Final answer
    x = 42,738.07

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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.