Home / 105,466.30-145,543.55-57,719.62

Finding the Fourth Proportional to 105,466.30, 145,543.55 and 57,719.62

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Solution

The fourth proportional to 105,466.30, 145,543.55 and 57,719.62 is: 79,653.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,466.30 : 145,543.55 = 57,719.62 : x
  2. Step 2: Convert to fraction form
    105,466.30/145,543.55 = 57,719.62/x
  3. Step 3: Cross multiply
    105,466.30x = 145,543.55 × 57,719.62
  4. Step 4: Simplify right side
    105,466.30x = 8,400,718,399.45
  5. Step 5: Solve for x
    x = 8,400,718,399.45/105,466.30
  6. Step 6: Final answer
    x = 79,653.11

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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.