Home / 77,098.40-115,417.20-45,917.60

Finding the Fourth Proportional to 77,098.40, 115,417.20 and 45,917.60

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Solution

The fourth proportional to 77,098.40, 115,417.20 and 45,917.60 is: 68,739.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,098.40 : 115,417.20 = 45,917.60 : x
  2. Step 2: Convert to fraction form
    77,098.40/115,417.20 = 45,917.60/x
  3. Step 3: Cross multiply
    77,098.40x = 115,417.20 × 45,917.60
  4. Step 4: Simplify right side
    77,098.40x = 5,299,680,822.72
  5. Step 5: Solve for x
    x = 5,299,680,822.72/77,098.40
  6. Step 6: Final answer
    x = 68,739.18

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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.