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Finding the Fourth Proportional to 83,465.47, 115,181.95 and 45,739.72

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Solution

The fourth proportional to 83,465.47, 115,181.95 and 45,739.72 is: 63,120.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,465.47 : 115,181.95 = 45,739.72 : x
  2. Step 2: Convert to fraction form
    83,465.47/115,181.95 = 45,739.72/x
  3. Step 3: Cross multiply
    83,465.47x = 115,181.95 × 45,739.72
  4. Step 4: Simplify right side
    83,465.47x = 5,268,390,257.44
  5. Step 5: Solve for x
    x = 5,268,390,257.44/83,465.47
  6. Step 6: Final answer
    x = 63,120.60

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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.