Home / 85,532.08-128,298.09-38,134.93

Finding the Fourth Proportional to 85,532.08, 128,298.09 and 38,134.93

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Solution

The fourth proportional to 85,532.08, 128,298.09 and 38,134.93 is: 57,202.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,532.08 : 128,298.09 = 38,134.93 : x
  2. Step 2: Convert to fraction form
    85,532.08/128,298.09 = 38,134.93/x
  3. Step 3: Cross multiply
    85,532.08x = 128,298.09 × 38,134.93
  4. Step 4: Simplify right side
    85,532.08x = 4,892,638,681.28
  5. Step 5: Solve for x
    x = 4,892,638,681.28/85,532.08
  6. Step 6: Final answer
    x = 57,202.38

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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.