Home / 65,823.73-90,837.20-40,330.15

Finding the Fourth Proportional to 65,823.73, 90,837.20 and 40,330.15

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Solution

The fourth proportional to 65,823.73, 90,837.20 and 40,330.15 is: 55,655.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,823.73 : 90,837.20 = 40,330.15 : x
  2. Step 2: Convert to fraction form
    65,823.73/90,837.20 = 40,330.15/x
  3. Step 3: Cross multiply
    65,823.73x = 90,837.20 × 40,330.15
  4. Step 4: Simplify right side
    65,823.73x = 3,663,477,901.58
  5. Step 5: Solve for x
    x = 3,663,477,901.58/65,823.73
  6. Step 6: Final answer
    x = 55,655.88

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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.