Home / 77,117.40-115,603.20-45,551.70

Finding the Fourth Proportional to 77,117.40, 115,603.20 and 45,551.70

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Solution

The fourth proportional to 77,117.40, 115,603.20 and 45,551.70 is: 68,284.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,117.40 : 115,603.20 = 45,551.70 : x
  2. Step 2: Convert to fraction form
    77,117.40/115,603.20 = 45,551.70/x
  3. Step 3: Cross multiply
    77,117.40x = 115,603.20 × 45,551.70
  4. Step 4: Simplify right side
    77,117.40x = 5,265,922,285.44
  5. Step 5: Solve for x
    x = 5,265,922,285.44/77,117.40
  6. Step 6: Final answer
    x = 68,284.49

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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.