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Finding the Fourth Proportional to 86,645.30, 130,025.55 and 49,205.30

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Solution

The fourth proportional to 86,645.30, 130,025.55 and 49,205.30 is: 73,840.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,645.30 : 130,025.55 = 49,205.30 : x
  2. Step 2: Convert to fraction form
    86,645.30/130,025.55 = 49,205.30/x
  3. Step 3: Cross multiply
    86,645.30x = 130,025.55 × 49,205.30
  4. Step 4: Simplify right side
    86,645.30x = 6,397,946,195.42
  5. Step 5: Solve for x
    x = 6,397,946,195.42/86,645.30
  6. Step 6: Final answer
    x = 73,840.66

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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.