Home / 77,288.64-115,888.50-41,220.60

Finding the Fourth Proportional to 77,288.64, 115,888.50 and 41,220.60

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Solution

The fourth proportional to 77,288.64, 115,888.50 and 41,220.60 is: 61,807.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,288.64 : 115,888.50 = 41,220.60 : x
  2. Step 2: Convert to fraction form
    77,288.64/115,888.50 = 41,220.60/x
  3. Step 3: Cross multiply
    77,288.64x = 115,888.50 × 41,220.60
  4. Step 4: Simplify right side
    77,288.64x = 4,776,993,503.10
  5. Step 5: Solve for x
    x = 4,776,993,503.10/77,288.64
  6. Step 6: Final answer
    x = 61,807.19

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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.