Home / 85,823.54-128,772.45-46,408.58

Finding the Fourth Proportional to 85,823.54, 128,772.45 and 46,408.58

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Solution

The fourth proportional to 85,823.54, 128,772.45 and 46,408.58 is: 69,632.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,823.54 : 128,772.45 = 46,408.58 : x
  2. Step 2: Convert to fraction form
    85,823.54/128,772.45 = 46,408.58/x
  3. Step 3: Cross multiply
    85,823.54x = 128,772.45 × 46,408.58
  4. Step 4: Simplify right side
    85,823.54x = 5,976,146,547.62
  5. Step 5: Solve for x
    x = 5,976,146,547.62/85,823.54
  6. Step 6: Final answer
    x = 69,632.95

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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.