Home / 71,421,861.12-107,146,581.76-30,480,702.72

Finding the Fourth Proportional to 71,421,861.12, 107,146,581.76 and 30,480,702.72

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Solution

The fourth proportional to 71,421,861.12, 107,146,581.76 and 30,480,702.72 is: 45,726,939.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,421,861.12 : 107,146,581.76 = 30,480,702.72 : x
  2. Step 2: Convert to fraction form
    71,421,861.12/107,146,581.76 = 30,480,702.72/x
  3. Step 3: Cross multiply
    71,421,861.12x = 107,146,581.76 × 30,480,702.72
  4. Step 4: Simplify right side
    71,421,861.12x = 3,265,903,106,090,734.50
  5. Step 5: Solve for x
    x = 3,265,903,106,090,734.50/71,421,861.12
  6. Step 6: Final answer
    x = 45,726,939.27

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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.