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Finding the Fourth Proportional to 51,339.48, 76,995.88 and 21,742.08

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Solution

The fourth proportional to 51,339.48, 76,995.88 and 21,742.08 is: 32,607.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,339.48 : 76,995.88 = 21,742.08 : x
  2. Step 2: Convert to fraction form
    51,339.48/76,995.88 = 21,742.08/x
  3. Step 3: Cross multiply
    51,339.48x = 76,995.88 × 21,742.08
  4. Step 4: Simplify right side
    51,339.48x = 1,674,050,582.63
  5. Step 5: Solve for x
    x = 1,674,050,582.63/51,339.48
  6. Step 6: Final answer
    x = 32,607.47

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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.