Home / 78,037,405.60-117,056,108.40-49,190,000.80

Finding the Fourth Proportional to 78,037,405.60, 117,056,108.40 and 49,190,000.80

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Solution

The fourth proportional to 78,037,405.60, 117,056,108.40 and 49,190,000.80 is: 73,785,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,037,405.60 : 117,056,108.40 = 49,190,000.80 : x
  2. Step 2: Convert to fraction form
    78,037,405.60/117,056,108.40 = 49,190,000.80/x
  3. Step 3: Cross multiply
    78,037,405.60x = 117,056,108.40 × 49,190,000.80
  4. Step 4: Simplify right side
    78,037,405.60x = 5,757,990,065,840,887
  5. Step 5: Solve for x
    x = 5,757,990,065,840,887/78,037,405.60
  6. Step 6: Final answer
    x = 73,785,001.20

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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.