Home / 28,079,920.74-42,124,407.12-8,649,137.72

Finding the Fourth Proportional to 28,079,920.74, 42,124,407.12 and 8,649,137.72

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Solution

The fourth proportional to 28,079,920.74, 42,124,407.12 and 8,649,137.72 is: 12,975,100.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,079,920.74 : 42,124,407.12 = 8,649,137.72 : x
  2. Step 2: Convert to fraction form
    28,079,920.74/42,124,407.12 = 8,649,137.72/x
  3. Step 3: Cross multiply
    28,079,920.74x = 42,124,407.12 × 8,649,137.72
  4. Step 4: Simplify right side
    28,079,920.74x = 364,339,798,343,606.50
  5. Step 5: Solve for x
    x = 364,339,798,343,606.50/28,079,920.74
  6. Step 6: Final answer
    x = 12,975,100.67

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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.