Home / 78,428,515.08-108,223,768.62-45,382,172.32

Finding the Fourth Proportional to 78,428,515.08, 108,223,768.62 and 45,382,172.32

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Solution

The fourth proportional to 78,428,515.08, 108,223,768.62 and 45,382,172.32 is: 62,623,010.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,428,515.08 : 108,223,768.62 = 45,382,172.32 : x
  2. Step 2: Convert to fraction form
    78,428,515.08/108,223,768.62 = 45,382,172.32/x
  3. Step 3: Cross multiply
    78,428,515.08x = 108,223,768.62 × 45,382,172.32
  4. Step 4: Simplify right side
    78,428,515.08x = 4,911,429,716,632,649
  5. Step 5: Solve for x
    x = 4,911,429,716,632,649/78,428,515.08
  6. Step 6: Final answer
    x = 62,623,010.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.