Home / 85,410.38-128,102.40-29,237.60

Finding the Fourth Proportional to 85,410.38, 128,102.40 and 29,237.60

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Solution

The fourth proportional to 85,410.38, 128,102.40 and 29,237.60 is: 43,851.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,410.38 : 128,102.40 = 29,237.60 : x
  2. Step 2: Convert to fraction form
    85,410.38/128,102.40 = 29,237.60/x
  3. Step 3: Cross multiply
    85,410.38x = 128,102.40 × 29,237.60
  4. Step 4: Simplify right side
    85,410.38x = 3,745,406,730.24
  5. Step 5: Solve for x
    x = 3,745,406,730.24/85,410.38
  6. Step 6: Final answer
    x = 43,851.89

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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.