Home / 78,068,409.36-107,735,042.57-43,261,680.93

Finding the Fourth Proportional to 78,068,409.36, 107,735,042.57 and 43,261,680.93

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Solution

The fourth proportional to 78,068,409.36, 107,735,042.57 and 43,261,680.93 is: 59,701,473.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,068,409.36 : 107,735,042.57 = 43,261,680.93 : x
  2. Step 2: Convert to fraction form
    78,068,409.36/107,735,042.57 = 43,261,680.93/x
  3. Step 3: Cross multiply
    78,068,409.36x = 107,735,042.57 × 43,261,680.93
  4. Step 4: Simplify right side
    78,068,409.36x = 4,660,799,036,426,999
  5. Step 5: Solve for x
    x = 4,660,799,036,426,999/78,068,409.36
  6. Step 6: Final answer
    x = 59,701,473.04

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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.