Home / 78,674,761.80-118,012,142.70-48,063,760.20

Finding the Fourth Proportional to 78,674,761.80, 118,012,142.70 and 48,063,760.20

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Solution

The fourth proportional to 78,674,761.80, 118,012,142.70 and 48,063,760.20 is: 72,095,640.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,674,761.80 : 118,012,142.70 = 48,063,760.20 : x
  2. Step 2: Convert to fraction form
    78,674,761.80/118,012,142.70 = 48,063,760.20/x
  3. Step 3: Cross multiply
    78,674,761.80x = 118,012,142.70 × 48,063,760.20
  4. Step 4: Simplify right side
    78,674,761.80x = 5,672,107,327,420,981
  5. Step 5: Solve for x
    x = 5,672,107,327,420,981/78,674,761.80
  6. Step 6: Final answer
    x = 72,095,640.30

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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.