Home / 77,217.56-115,827.48-30,470

Finding the Fourth Proportional to 77,217.56, 115,827.48 and 30,470

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Solution

The fourth proportional to 77,217.56, 115,827.48 and 30,470 is: 45,705.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,217.56 : 115,827.48 = 30,470 : x
  2. Step 2: Convert to fraction form
    77,217.56/115,827.48 = 30,470/x
  3. Step 3: Cross multiply
    77,217.56x = 115,827.48 × 30,470
  4. Step 4: Simplify right side
    77,217.56x = 3,529,263,315.60
  5. Step 5: Solve for x
    x = 3,529,263,315.60/77,217.56
  6. Step 6: Final answer
    x = 45,705.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.