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Finding the Fourth Proportional to 52,686.98, 78,993.51 and 19,402.78

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Solution

The fourth proportional to 52,686.98, 78,993.51 and 19,402.78 is: 29,090.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,686.98 : 78,993.51 = 19,402.78 : x
  2. Step 2: Convert to fraction form
    52,686.98/78,993.51 = 19,402.78/x
  3. Step 3: Cross multiply
    52,686.98x = 78,993.51 × 19,402.78
  4. Step 4: Simplify right side
    52,686.98x = 1,532,693,695.96
  5. Step 5: Solve for x
    x = 1,532,693,695.96/52,686.98
  6. Step 6: Final answer
    x = 29,090.56

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1.5x scale

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.