Home / 85,943.75-118,603.64-47,705.76

Finding the Fourth Proportional to 85,943.75, 118,603.64 and 47,705.76

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Solution

The fourth proportional to 85,943.75, 118,603.64 and 47,705.76 is: 65,834.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,943.75 : 118,603.64 = 47,705.76 : x
  2. Step 2: Convert to fraction form
    85,943.75/118,603.64 = 47,705.76/x
  3. Step 3: Cross multiply
    85,943.75x = 118,603.64 × 47,705.76
  4. Step 4: Simplify right side
    85,943.75x = 5,658,076,546.44
  5. Step 5: Solve for x
    x = 5,658,076,546.44/85,943.75
  6. Step 6: Final answer
    x = 65,834.65

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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.