Home / 83,645.61-115,431.05-45,405.14

Finding the Fourth Proportional to 83,645.61, 115,431.05 and 45,405.14

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Solution

The fourth proportional to 83,645.61, 115,431.05 and 45,405.14 is: 62,659.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,645.61 : 115,431.05 = 45,405.14 : x
  2. Step 2: Convert to fraction form
    83,645.61/115,431.05 = 45,405.14/x
  3. Step 3: Cross multiply
    83,645.61x = 115,431.05 × 45,405.14
  4. Step 4: Simplify right side
    83,645.61x = 5,241,162,985.60
  5. Step 5: Solve for x
    x = 5,241,162,985.60/83,645.61
  6. Step 6: Final answer
    x = 62,659.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.