Home / 78,736,625.40-118,045,889.10-40,425,634.20

Finding the Fourth Proportional to 78,736,625.40, 118,045,889.10 and 40,425,634.20

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Solution

The fourth proportional to 78,736,625.40, 118,045,889.10 and 40,425,634.20 is: 60,608,133.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,736,625.40 : 118,045,889.10 = 40,425,634.20 : x
  2. Step 2: Convert to fraction form
    78,736,625.40/118,045,889.10 = 40,425,634.20/x
  3. Step 3: Cross multiply
    78,736,625.40x = 118,045,889.10 × 40,425,634.20
  4. Step 4: Simplify right side
    78,736,625.40x = 4,772,079,931,570,367
  5. Step 5: Solve for x
    x = 4,772,079,931,570,367/78,736,625.40
  6. Step 6: Final answer
    x = 60,608,133.86

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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.