Home / 105,409.08-145,464.35-57,662.46

Finding the Fourth Proportional to 105,409.08, 145,464.35 and 57,662.46

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Solution

The fourth proportional to 105,409.08, 145,464.35 and 57,662.46 is: 79,574.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,409.08 : 145,464.35 = 57,662.46 : x
  2. Step 2: Convert to fraction form
    105,409.08/145,464.35 = 57,662.46/x
  3. Step 3: Cross multiply
    105,409.08x = 145,464.35 × 57,662.46
  4. Step 4: Simplify right side
    105,409.08x = 8,387,831,974.99
  5. Step 5: Solve for x
    x = 8,387,831,974.99/105,409.08
  6. Step 6: Final answer
    x = 79,574.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.