Home / 85,968.41-128,784.86-56,296.28

Finding the Fourth Proportional to 85,968.41, 128,784.86 and 56,296.28

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Solution

The fourth proportional to 85,968.41, 128,784.86 and 56,296.28 is: 84,334.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,968.41 : 128,784.86 = 56,296.28 : x
  2. Step 2: Convert to fraction form
    85,968.41/128,784.86 = 56,296.28/x
  3. Step 3: Cross multiply
    85,968.41x = 128,784.86 × 56,296.28
  4. Step 4: Simplify right side
    85,968.41x = 7,250,108,789.91
  5. Step 5: Solve for x
    x = 7,250,108,789.91/85,968.41
  6. Step 6: Final answer
    x = 84,334.57

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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.