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Finding the Fourth Proportional to 53,259.81, 79,875.90 and 15,811.08

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Solution

The fourth proportional to 53,259.81, 79,875.90 and 15,811.08 is: 23,712.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,259.81 : 79,875.90 = 15,811.08 : x
  2. Step 2: Convert to fraction form
    53,259.81/79,875.90 = 15,811.08/x
  3. Step 3: Cross multiply
    53,259.81x = 79,875.90 × 15,811.08
  4. Step 4: Simplify right side
    53,259.81x = 1,262,924,244.97
  5. Step 5: Solve for x
    x = 1,262,924,244.97/53,259.81
  6. Step 6: Final answer
    x = 23,712.52

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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.