Home / 70,417.11-105,625.62-28,297.20

Finding the Fourth Proportional to 70,417.11, 105,625.62 and 28,297.20

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Solution

The fourth proportional to 70,417.11, 105,625.62 and 28,297.20 is: 42,445.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,417.11 : 105,625.62 = 28,297.20 : x
  2. Step 2: Convert to fraction form
    70,417.11/105,625.62 = 28,297.20/x
  3. Step 3: Cross multiply
    70,417.11x = 105,625.62 × 28,297.20
  4. Step 4: Simplify right side
    70,417.11x = 2,988,909,294.26
  5. Step 5: Solve for x
    x = 2,988,909,294.26/70,417.11
  6. Step 6: Final answer
    x = 42,445.78

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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.