Home / 77,860.64-116,878.32-31,146.08

Finding the Fourth Proportional to 77,860.64, 116,878.32 and 31,146.08

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Solution

The fourth proportional to 77,860.64, 116,878.32 and 31,146.08 is: 46,754.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,860.64 : 116,878.32 = 31,146.08 : x
  2. Step 2: Convert to fraction form
    77,860.64/116,878.32 = 31,146.08/x
  3. Step 3: Cross multiply
    77,860.64x = 116,878.32 × 31,146.08
  4. Step 4: Simplify right side
    77,860.64x = 3,640,301,504.99
  5. Step 5: Solve for x
    x = 3,640,301,504.99/77,860.64
  6. Step 6: Final answer
    x = 46,754.07

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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.