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Finding the Fourth Proportional to 52,592.79, 78,840.44 and 20,995.20

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Solution

The fourth proportional to 52,592.79, 78,840.44 and 20,995.20 is: 31,473.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,592.79 : 78,840.44 = 20,995.20 : x
  2. Step 2: Convert to fraction form
    52,592.79/78,840.44 = 20,995.20/x
  3. Step 3: Cross multiply
    52,592.79x = 78,840.44 × 20,995.20
  4. Step 4: Simplify right side
    52,592.79x = 1,655,270,779.64
  5. Step 5: Solve for x
    x = 1,655,270,779.64/52,592.79
  6. Step 6: Final answer
    x = 31,473.34

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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.