Home / 105,527.70-145,622.64-57,771.90

Finding the Fourth Proportional to 105,527.70, 145,622.64 and 57,771.90

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Solution

The fourth proportional to 105,527.70, 145,622.64 and 57,771.90 is: 79,722.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,527.70 : 145,622.64 = 57,771.90 : x
  2. Step 2: Convert to fraction form
    105,527.70/145,622.64 = 57,771.90/x
  3. Step 3: Cross multiply
    105,527.70x = 145,622.64 × 57,771.90
  4. Step 4: Simplify right side
    105,527.70x = 8,412,896,595.82
  5. Step 5: Solve for x
    x = 8,412,896,595.82/105,527.70
  6. Step 6: Final answer
    x = 79,722.16

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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.