Home / 30,381.18-45,573.39-28,719.06

Finding the Fourth Proportional to 30,381.18, 45,573.39 and 28,719.06

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Solution

The fourth proportional to 30,381.18, 45,573.39 and 28,719.06 is: 43,080.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,381.18 : 45,573.39 = 28,719.06 : x
  2. Step 2: Convert to fraction form
    30,381.18/45,573.39 = 28,719.06/x
  3. Step 3: Cross multiply
    30,381.18x = 45,573.39 × 28,719.06
  4. Step 4: Simplify right side
    30,381.18x = 1,308,824,921.81
  5. Step 5: Solve for x
    x = 1,308,824,921.81/30,381.18
  6. Step 6: Final answer
    x = 43,080.12

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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.