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Finding the Fourth Proportional to 53,343.60, 79,946.16 and 21,716.88

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Solution

The fourth proportional to 53,343.60, 79,946.16 and 21,716.88 is: 32,547.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,343.60 : 79,946.16 = 21,716.88 : x
  2. Step 2: Convert to fraction form
    53,343.60/79,946.16 = 21,716.88/x
  3. Step 3: Cross multiply
    53,343.60x = 79,946.16 × 21,716.88
  4. Step 4: Simplify right side
    53,343.60x = 1,736,181,163.18
  5. Step 5: Solve for x
    x = 1,736,181,163.18/53,343.60
  6. Step 6: Final answer
    x = 32,547.13

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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.