Home / 77,172.16-115,760.66-26,570.64

Finding the Fourth Proportional to 77,172.16, 115,760.66 and 26,570.64

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Solution

The fourth proportional to 77,172.16, 115,760.66 and 26,570.64 is: 39,856.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,172.16 : 115,760.66 = 26,570.64 : x
  2. Step 2: Convert to fraction form
    77,172.16/115,760.66 = 26,570.64/x
  3. Step 3: Cross multiply
    77,172.16x = 115,760.66 × 26,570.64
  4. Step 4: Simplify right side
    77,172.16x = 3,075,834,823.02
  5. Step 5: Solve for x
    x = 3,075,834,823.02/77,172.16
  6. Step 6: Final answer
    x = 39,856.79

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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.