Home / 105,558.84-145,665.78-57,802.95

Finding the Fourth Proportional to 105,558.84, 145,665.78 and 57,802.95

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Solution

The fourth proportional to 105,558.84, 145,665.78 and 57,802.95 is: 79,765.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,558.84 : 145,665.78 = 57,802.95 : x
  2. Step 2: Convert to fraction form
    105,558.84/145,665.78 = 57,802.95/x
  3. Step 3: Cross multiply
    105,558.84x = 145,665.78 × 57,802.95
  4. Step 4: Simplify right side
    105,558.84x = 8,419,911,798.05
  5. Step 5: Solve for x
    x = 8,419,911,798.05/105,558.84
  6. Step 6: Final answer
    x = 79,765.10

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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.