Home / 48,216.84-72,301.55-20,128.47

Finding the Fourth Proportional to 48,216.84, 72,301.55 and 20,128.47

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Solution

The fourth proportional to 48,216.84, 72,301.55 and 20,128.47 is: 30,182.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,216.84 : 72,301.55 = 20,128.47 : x
  2. Step 2: Convert to fraction form
    48,216.84/72,301.55 = 20,128.47/x
  3. Step 3: Cross multiply
    48,216.84x = 72,301.55 × 20,128.47
  4. Step 4: Simplify right side
    48,216.84x = 1,455,319,479.49
  5. Step 5: Solve for x
    x = 1,455,319,479.49/48,216.84
  6. Step 6: Final answer
    x = 30,182.81

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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.