Home / 80,079,513.72-120,128,718.46-60,012,301.56

Finding the Fourth Proportional to 80,079,513.72, 120,128,718.46 and 60,012,301.56

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Solution

The fourth proportional to 80,079,513.72, 120,128,718.46 and 60,012,301.56 is: 90,025,532.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,079,513.72 : 120,128,718.46 = 60,012,301.56 : x
  2. Step 2: Convert to fraction form
    80,079,513.72/120,128,718.46 = 60,012,301.56/x
  3. Step 3: Cross multiply
    80,079,513.72x = 120,128,718.46 × 60,012,301.56
  4. Step 4: Simplify right side
    80,079,513.72x = 7,209,200,878,237,859
  5. Step 5: Solve for x
    x = 7,209,200,878,237,859/80,079,513.72
  6. Step 6: Final answer
    x = 90,025,532.67

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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.