Home / 85,968.72-128,931.21-33,349.50

Finding the Fourth Proportional to 85,968.72, 128,931.21 and 33,349.50

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Solution

The fourth proportional to 85,968.72, 128,931.21 and 33,349.50 is: 50,015.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,968.72 : 128,931.21 = 33,349.50 : x
  2. Step 2: Convert to fraction form
    85,968.72/128,931.21 = 33,349.50/x
  3. Step 3: Cross multiply
    85,968.72x = 128,931.21 × 33,349.50
  4. Step 4: Simplify right side
    85,968.72x = 4,299,791,387.90
  5. Step 5: Solve for x
    x = 4,299,791,387.90/85,968.72
  6. Step 6: Final answer
    x = 50,015.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.