Home / 78,301,600.80-117,452,401.20-51,091,821.60

Finding the Fourth Proportional to 78,301,600.80, 117,452,401.20 and 51,091,821.60

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Solution

The fourth proportional to 78,301,600.80, 117,452,401.20 and 51,091,821.60 is: 76,637,732.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,301,600.80 : 117,452,401.20 = 51,091,821.60 : x
  2. Step 2: Convert to fraction form
    78,301,600.80/117,452,401.20 = 51,091,821.60/x
  3. Step 3: Cross multiply
    78,301,600.80x = 117,452,401.20 × 51,091,821.60
  4. Step 4: Simplify right side
    78,301,600.80x = 6,000,857,128,602,026
  5. Step 5: Solve for x
    x = 6,000,857,128,602,026/78,301,600.80
  6. Step 6: Final answer
    x = 76,637,732.40

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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.