Home / 78,286,972.80-117,430,459.20-49,187,625.60

Finding the Fourth Proportional to 78,286,972.80, 117,430,459.20 and 49,187,625.60

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Solution

The fourth proportional to 78,286,972.80, 117,430,459.20 and 49,187,625.60 is: 73,781,438.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,286,972.80 : 117,430,459.20 = 49,187,625.60 : x
  2. Step 2: Convert to fraction form
    78,286,972.80/117,430,459.20 = 49,187,625.60/x
  3. Step 3: Cross multiply
    78,286,972.80x = 117,430,459.20 × 49,187,625.60
  4. Step 4: Simplify right side
    78,286,972.80x = 5,776,125,461,165,676
  5. Step 5: Solve for x
    x = 5,776,125,461,165,676/78,286,972.80
  6. Step 6: Final answer
    x = 73,781,438.40

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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.