Home / 81,449.16-112,345.02-47,915.16

Finding the Fourth Proportional to 81,449.16, 112,345.02 and 47,915.16

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Solution

The fourth proportional to 81,449.16, 112,345.02 and 47,915.16 is: 66,090.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,449.16 : 112,345.02 = 47,915.16 : x
  2. Step 2: Convert to fraction form
    81,449.16/112,345.02 = 47,915.16/x
  3. Step 3: Cross multiply
    81,449.16x = 112,345.02 × 47,915.16
  4. Step 4: Simplify right side
    81,449.16x = 5,383,029,608.50
  5. Step 5: Solve for x
    x = 5,383,029,608.50/81,449.16
  6. Step 6: Final answer
    x = 66,090.67

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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.