Home / 51,131.56-70,564.46-30,719.86

Finding the Fourth Proportional to 51,131.56, 70,564.46 and 30,719.86

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Solution

The fourth proportional to 51,131.56, 70,564.46 and 30,719.86 is: 42,395.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,131.56 : 70,564.46 = 30,719.86 : x
  2. Step 2: Convert to fraction form
    51,131.56/70,564.46 = 30,719.86/x
  3. Step 3: Cross multiply
    51,131.56x = 70,564.46 × 30,719.86
  4. Step 4: Simplify right side
    51,131.56x = 2,167,730,332.18
  5. Step 5: Solve for x
    x = 2,167,730,332.18/51,131.56
  6. Step 6: Final answer
    x = 42,395.15

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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.