Home / 70,408.31-105,616.10-17,818.25

Finding the Fourth Proportional to 70,408.31, 105,616.10 and 17,818.25

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Solution

The fourth proportional to 70,408.31, 105,616.10 and 17,818.25 is: 26,728.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,408.31 : 105,616.10 = 17,818.25 : x
  2. Step 2: Convert to fraction form
    70,408.31/105,616.10 = 17,818.25/x
  3. Step 3: Cross multiply
    70,408.31x = 105,616.10 × 17,818.25
  4. Step 4: Simplify right side
    70,408.31x = 1,881,893,590.29
  5. Step 5: Solve for x
    x = 1,881,893,590.29/70,408.31
  6. Step 6: Final answer
    x = 26,728.29

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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.