Home / 78,736,629.40-118,045,895.10-40,425,638.20

Finding the Fourth Proportional to 78,736,629.40, 118,045,895.10 and 40,425,638.20

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Solution

The fourth proportional to 78,736,629.40, 118,045,895.10 and 40,425,638.20 is: 60,608,139.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,736,629.40 : 118,045,895.10 = 40,425,638.20 : x
  2. Step 2: Convert to fraction form
    78,736,629.40/118,045,895.10 = 40,425,638.20/x
  3. Step 3: Cross multiply
    78,736,629.40x = 118,045,895.10 × 40,425,638.20
  4. Step 4: Simplify right side
    78,736,629.40x = 4,772,080,646,307,753
  5. Step 5: Solve for x
    x = 4,772,080,646,307,753/78,736,629.40
  6. Step 6: Final answer
    x = 60,608,139.85

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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.