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Finding the Fourth Proportional to 51,673.68, 77,483.55 and 18,388.89

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Solution

The fourth proportional to 51,673.68, 77,483.55 and 18,388.89 is: 27,573.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,673.68 : 77,483.55 = 18,388.89 : x
  2. Step 2: Convert to fraction form
    51,673.68/77,483.55 = 18,388.89/x
  3. Step 3: Cross multiply
    51,673.68x = 77,483.55 × 18,388.89
  4. Step 4: Simplify right side
    51,673.68x = 1,424,836,477.76
  5. Step 5: Solve for x
    x = 1,424,836,477.76/51,673.68
  6. Step 6: Final answer
    x = 27,573.74

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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.