Home / 77,024.16-115,488-30,222.72

Finding the Fourth Proportional to 77,024.16, 115,488 and 30,222.72

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Solution

The fourth proportional to 77,024.16, 115,488 and 30,222.72 is: 45,315.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,024.16 : 115,488 = 30,222.72 : x
  2. Step 2: Convert to fraction form
    77,024.16/115,488 = 30,222.72/x
  3. Step 3: Cross multiply
    77,024.16x = 115,488 × 30,222.72
  4. Step 4: Simplify right side
    77,024.16x = 3,490,361,487.36
  5. Step 5: Solve for x
    x = 3,490,361,487.36/77,024.16
  6. Step 6: Final answer
    x = 45,315.15

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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.