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Finding the Fourth Proportional to 52,579, 78,869.04 and 15,643

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Solution

The fourth proportional to 52,579, 78,869.04 and 15,643 is: 23,464.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,579 : 78,869.04 = 15,643 : x
  2. Step 2: Convert to fraction form
    52,579/78,869.04 = 15,643/x
  3. Step 3: Cross multiply
    52,579x = 78,869.04 × 15,643
  4. Step 4: Simplify right side
    52,579x = 1,233,748,392.72
  5. Step 5: Solve for x
    x = 1,233,748,392.72/52,579
  6. Step 6: Final answer
    x = 23,464.66

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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.