Home / 105,449.81-145,520.70-57,703.14

Finding the Fourth Proportional to 105,449.81, 145,520.70 and 57,703.14

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Solution

The fourth proportional to 105,449.81, 145,520.70 and 57,703.14 is: 79,630.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,449.81 : 145,520.70 = 57,703.14 : x
  2. Step 2: Convert to fraction form
    105,449.81/145,520.70 = 57,703.14/x
  3. Step 3: Cross multiply
    105,449.81x = 145,520.70 × 57,703.14
  4. Step 4: Simplify right side
    105,449.81x = 8,397,001,325.00
  5. Step 5: Solve for x
    x = 8,397,001,325.00/105,449.81
  6. Step 6: Final answer
    x = 79,630.32

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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.