Home / 78,068,527.76-107,735,206.20-43,261,799.60

Finding the Fourth Proportional to 78,068,527.76, 107,735,206.20 and 43,261,799.60

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Solution

The fourth proportional to 78,068,527.76, 107,735,206.20 and 43,261,799.60 is: 59,701,636.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,068,527.76 : 107,735,206.20 = 43,261,799.60 : x
  2. Step 2: Convert to fraction form
    78,068,527.76/107,735,206.20 = 43,261,799.60/x
  3. Step 3: Cross multiply
    78,068,527.76x = 107,735,206.20 × 43,261,799.60
  4. Step 4: Simplify right side
    78,068,527.76x = 4,660,818,900,489,078
  5. Step 5: Solve for x
    x = 4,660,818,900,489,078/78,068,527.76
  6. Step 6: Final answer
    x = 59,701,636.94

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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.