Home / 77,949,702.80-116,916,156.12-20,447,738

Finding the Fourth Proportional to 77,949,702.80, 116,916,156.12 and 20,447,738

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Solution

The fourth proportional to 77,949,702.80, 116,916,156.12 and 20,447,738 is: 30,669,404.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,949,702.80 : 116,916,156.12 = 20,447,738 : x
  2. Step 2: Convert to fraction form
    77,949,702.80/116,916,156.12 = 20,447,738/x
  3. Step 3: Cross multiply
    77,949,702.80x = 116,916,156.12 × 20,447,738
  4. Step 4: Simplify right side
    77,949,702.80x = 2,390,670,928,308,856.50
  5. Step 5: Solve for x
    x = 2,390,670,928,308,856.50/77,949,702.80
  6. Step 6: Final answer
    x = 30,669,404.02

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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.