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Finding the Fourth Proportional to 51,881.89, 71,598.93 and 28,913.79

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Solution

The fourth proportional to 51,881.89, 71,598.93 and 28,913.79 is: 39,902.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,881.89 : 71,598.93 = 28,913.79 : x
  2. Step 2: Convert to fraction form
    51,881.89/71,598.93 = 28,913.79/x
  3. Step 3: Cross multiply
    51,881.89x = 71,598.93 × 28,913.79
  4. Step 4: Simplify right side
    51,881.89x = 2,070,196,426.24
  5. Step 5: Solve for x
    x = 2,070,196,426.24/51,881.89
  6. Step 6: Final answer
    x = 39,902.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.