Home / 85,728.28-118,298.46-47,997.40

Finding the Fourth Proportional to 85,728.28, 118,298.46 and 47,997.40

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Solution

The fourth proportional to 85,728.28, 118,298.46 and 47,997.40 is: 66,232.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,728.28 : 118,298.46 = 47,997.40 : x
  2. Step 2: Convert to fraction form
    85,728.28/118,298.46 = 47,997.40/x
  3. Step 3: Cross multiply
    85,728.28x = 118,298.46 × 47,997.40
  4. Step 4: Simplify right side
    85,728.28x = 5,678,018,504.00
  5. Step 5: Solve for x
    x = 5,678,018,504.00/85,728.28
  6. Step 6: Final answer
    x = 66,232.74

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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.