Home / 58,418.40-87,639.76-18,976.32

Finding the Fourth Proportional to 58,418.40, 87,639.76 and 18,976.32

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Solution

The fourth proportional to 58,418.40, 87,639.76 and 18,976.32 is: 28,468.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,418.40 : 87,639.76 = 18,976.32 : x
  2. Step 2: Convert to fraction form
    58,418.40/87,639.76 = 18,976.32/x
  3. Step 3: Cross multiply
    58,418.40x = 87,639.76 × 18,976.32
  4. Step 4: Simplify right side
    58,418.40x = 1,663,080,130.48
  5. Step 5: Solve for x
    x = 1,663,080,130.48/58,418.40
  6. Step 6: Final answer
    x = 28,468.43

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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.