Home / 85,674.13-128,370.74-60,669.27

Finding the Fourth Proportional to 85,674.13, 128,370.74 and 60,669.27

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Solution

The fourth proportional to 85,674.13, 128,370.74 and 60,669.27 is: 90,904.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,674.13 : 128,370.74 = 60,669.27 : x
  2. Step 2: Convert to fraction form
    85,674.13/128,370.74 = 60,669.27/x
  3. Step 3: Cross multiply
    85,674.13x = 128,370.74 × 60,669.27
  4. Step 4: Simplify right side
    85,674.13x = 7,788,158,781.81
  5. Step 5: Solve for x
    x = 7,788,158,781.81/85,674.13
  6. Step 6: Final answer
    x = 90,904.44

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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.