Home / 85,904.90-128,954.55-50,864.30

Finding the Fourth Proportional to 85,904.90, 128,954.55 and 50,864.30

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Solution

The fourth proportional to 85,904.90, 128,954.55 and 50,864.30 is: 76,354.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,904.90 : 128,954.55 = 50,864.30 : x
  2. Step 2: Convert to fraction form
    85,904.90/128,954.55 = 50,864.30/x
  3. Step 3: Cross multiply
    85,904.90x = 128,954.55 × 50,864.30
  4. Step 4: Simplify right side
    85,904.90x = 6,559,182,917.57
  5. Step 5: Solve for x
    x = 6,559,182,917.57/85,904.90
  6. Step 6: Final answer
    x = 76,354.00

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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.