Home / 85,903.06-128,823.71-29,727.91

Finding the Fourth Proportional to 85,903.06, 128,823.71 and 29,727.91

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Solution

The fourth proportional to 85,903.06, 128,823.71 and 29,727.91 is: 44,581.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,903.06 : 128,823.71 = 29,727.91 : x
  2. Step 2: Convert to fraction form
    85,903.06/128,823.71 = 29,727.91/x
  3. Step 3: Cross multiply
    85,903.06x = 128,823.71 × 29,727.91
  4. Step 4: Simplify right side
    85,903.06x = 3,829,659,752.75
  5. Step 5: Solve for x
    x = 3,829,659,752.75/85,903.06
  6. Step 6: Final answer
    x = 44,581.18

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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.