Home / 81,544.32-112,485.56-51,318.40

Finding the Fourth Proportional to 81,544.32, 112,485.56 and 51,318.40

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Solution

The fourth proportional to 81,544.32, 112,485.56 and 51,318.40 is: 70,790.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,544.32 : 112,485.56 = 51,318.40 : x
  2. Step 2: Convert to fraction form
    81,544.32/112,485.56 = 51,318.40/x
  3. Step 3: Cross multiply
    81,544.32x = 112,485.56 × 51,318.40
  4. Step 4: Simplify right side
    81,544.32x = 5,772,578,962.30
  5. Step 5: Solve for x
    x = 5,772,578,962.30/81,544.32
  6. Step 6: Final answer
    x = 70,790.69

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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.