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Finding the Fourth Proportional to 52,688, 79,066.36 and 19,408.40

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Solution

The fourth proportional to 52,688, 79,066.36 and 19,408.40 is: 29,125.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,688 : 79,066.36 = 19,408.40 : x
  2. Step 2: Convert to fraction form
    52,688/79,066.36 = 19,408.40/x
  3. Step 3: Cross multiply
    52,688x = 79,066.36 × 19,408.40
  4. Step 4: Simplify right side
    52,688x = 1,534,551,541.42
  5. Step 5: Solve for x
    x = 1,534,551,541.42/52,688
  6. Step 6: Final answer
    x = 29,125.26

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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.