Home / 81,422,681.80-122,134,022.70-43,158,929.80

Finding the Fourth Proportional to 81,422,681.80, 122,134,022.70 and 43,158,929.80

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Solution

The fourth proportional to 81,422,681.80, 122,134,022.70 and 43,158,929.80 is: 64,738,394.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,422,681.80 : 122,134,022.70 = 43,158,929.80 : x
  2. Step 2: Convert to fraction form
    81,422,681.80/122,134,022.70 = 43,158,929.80/x
  3. Step 3: Cross multiply
    81,422,681.80x = 122,134,022.70 × 43,158,929.80
  4. Step 4: Simplify right side
    81,422,681.80x = 5,271,173,711,900,906
  5. Step 5: Solve for x
    x = 5,271,173,711,900,906/81,422,681.80
  6. Step 6: Final answer
    x = 64,738,394.70

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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.