Home / 85,955.06-128,971.32-46,465.94

Finding the Fourth Proportional to 85,955.06, 128,971.32 and 46,465.94

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Solution

The fourth proportional to 85,955.06, 128,971.32 and 46,465.94 is: 69,719.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,955.06 : 128,971.32 = 46,465.94 : x
  2. Step 2: Convert to fraction form
    85,955.06/128,971.32 = 46,465.94/x
  3. Step 3: Cross multiply
    85,955.06x = 128,971.32 × 46,465.94
  4. Step 4: Simplify right side
    85,955.06x = 5,992,773,616.84
  5. Step 5: Solve for x
    x = 5,992,773,616.84/85,955.06
  6. Step 6: Final answer
    x = 69,719.85

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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.