Home / 85,972.80-118,640.40-48,243.12

Finding the Fourth Proportional to 85,972.80, 118,640.40 and 48,243.12

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Solution

The fourth proportional to 85,972.80, 118,640.40 and 48,243.12 is: 66,574.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,972.80 : 118,640.40 = 48,243.12 : x
  2. Step 2: Convert to fraction form
    85,972.80/118,640.40 = 48,243.12/x
  3. Step 3: Cross multiply
    85,972.80x = 118,640.40 × 48,243.12
  4. Step 4: Simplify right side
    85,972.80x = 5,723,583,054.05
  5. Step 5: Solve for x
    x = 5,723,583,054.05/85,972.80
  6. Step 6: Final answer
    x = 66,574.35

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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.