Home / 78,042,829.20-116,938,272.60-65,193,766.80

Finding the Fourth Proportional to 78,042,829.20, 116,938,272.60 and 65,193,766.80

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Solution

The fourth proportional to 78,042,829.20, 116,938,272.60 and 65,193,766.80 is: 97,685,419.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,042,829.20 : 116,938,272.60 = 65,193,766.80 : x
  2. Step 2: Convert to fraction form
    78,042,829.20/116,938,272.60 = 65,193,766.80/x
  3. Step 3: Cross multiply
    78,042,829.20x = 116,938,272.60 × 65,193,766.80
  4. Step 4: Simplify right side
    78,042,829.20x = 7,623,646,473,879,229
  5. Step 5: Solve for x
    x = 7,623,646,473,879,229/78,042,829.20
  6. Step 6: Final answer
    x = 97,685,419.05

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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.