Home / 81,584,966.70-122,094,014.85-74,782,521.90

Finding the Fourth Proportional to 81,584,966.70, 122,094,014.85 and 74,782,521.90

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Solution

The fourth proportional to 81,584,966.70, 122,094,014.85 and 74,782,521.90 is: 111,913,980.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,584,966.70 : 122,094,014.85 = 74,782,521.90 : x
  2. Step 2: Convert to fraction form
    81,584,966.70/122,094,014.85 = 74,782,521.90/x
  3. Step 3: Cross multiply
    81,584,966.70x = 122,094,014.85 × 74,782,521.90
  4. Step 4: Simplify right side
    81,584,966.70x = 9,130,498,339,379,050
  5. Step 5: Solve for x
    x = 9,130,498,339,379,050/81,584,966.70
  6. Step 6: Final answer
    x = 111,913,980.10

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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.