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Finding the Fourth Proportional to 52,478.44, 72,421.12 and 28,606.43

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Solution

The fourth proportional to 52,478.44, 72,421.12 and 28,606.43 is: 39,477.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,478.44 : 72,421.12 = 28,606.43 : x
  2. Step 2: Convert to fraction form
    52,478.44/72,421.12 = 28,606.43/x
  3. Step 3: Cross multiply
    52,478.44x = 72,421.12 × 28,606.43
  4. Step 4: Simplify right side
    52,478.44x = 2,071,709,916.61
  5. Step 5: Solve for x
    x = 2,071,709,916.61/52,478.44
  6. Step 6: Final answer
    x = 39,477.36

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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.