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Finding the Fourth Proportional to 51,030, 70,423.80 and 28,369.37

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Solution

The fourth proportional to 51,030, 70,423.80 and 28,369.37 is: 39,151.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,030 : 70,423.80 = 28,369.37 : x
  2. Step 2: Convert to fraction form
    51,030/70,423.80 = 28,369.37/x
  3. Step 3: Cross multiply
    51,030x = 70,423.80 × 28,369.37
  4. Step 4: Simplify right side
    51,030x = 1,997,878,486.89
  5. Step 5: Solve for x
    x = 1,997,878,486.89/51,030
  6. Step 6: Final answer
    x = 39,151.06

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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.