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Finding the Fourth Proportional to 52,250.56, 78,391 and 18,970.08

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Solution

The fourth proportional to 52,250.56, 78,391 and 18,970.08 is: 28,460.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,250.56 : 78,391 = 18,970.08 : x
  2. Step 2: Convert to fraction form
    52,250.56/78,391 = 18,970.08/x
  3. Step 3: Cross multiply
    52,250.56x = 78,391 × 18,970.08
  4. Step 4: Simplify right side
    52,250.56x = 1,487,083,541.28
  5. Step 5: Solve for x
    x = 1,487,083,541.28/52,250.56
  6. Step 6: Final answer
    x = 28,460.62

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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.