Home / 51,947.80-71,678.86-30,719.32

Finding the Fourth Proportional to 51,947.80, 71,678.86 and 30,719.32

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Solution

The fourth proportional to 51,947.80, 71,678.86 and 30,719.32 is: 42,387.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,947.80 : 71,678.86 = 30,719.32 : x
  2. Step 2: Convert to fraction form
    51,947.80/71,678.86 = 30,719.32/x
  3. Step 3: Cross multiply
    51,947.80x = 71,678.86 × 30,719.32
  4. Step 4: Simplify right side
    51,947.80x = 2,201,925,581.58
  5. Step 5: Solve for x
    x = 2,201,925,581.58/51,947.80
  6. Step 6: Final answer
    x = 42,387.28

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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.