Home / 78,190,743.45-107,520,588.32-67,859,530.41

Finding the Fourth Proportional to 78,190,743.45, 107,520,588.32 and 67,859,530.41

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Solution

The fourth proportional to 78,190,743.45, 107,520,588.32 and 67,859,530.41 is: 93,314,071.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,190,743.45 : 107,520,588.32 = 67,859,530.41 : x
  2. Step 2: Convert to fraction form
    78,190,743.45/107,520,588.32 = 67,859,530.41/x
  3. Step 3: Cross multiply
    78,190,743.45x = 107,520,588.32 × 67,859,530.41
  4. Step 4: Simplify right side
    78,190,743.45x = 7,296,296,632,802,130
  5. Step 5: Solve for x
    x = 7,296,296,632,802,130/78,190,743.45
  6. Step 6: Final answer
    x = 93,314,071.60

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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.