Home / 85,557.02-128,353.84-25,590.20

Finding the Fourth Proportional to 85,557.02, 128,353.84 and 25,590.20

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Solution

The fourth proportional to 85,557.02, 128,353.84 and 25,590.20 is: 38,390.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,557.02 : 128,353.84 = 25,590.20 : x
  2. Step 2: Convert to fraction form
    85,557.02/128,353.84 = 25,590.20/x
  3. Step 3: Cross multiply
    85,557.02x = 128,353.84 × 25,590.20
  4. Step 4: Simplify right side
    85,557.02x = 3,284,599,730.62
  5. Step 5: Solve for x
    x = 3,284,599,730.62/85,557.02
  6. Step 6: Final answer
    x = 38,390.77

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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.