Home / 82,028,714.40-123,043,071.60-78,534,007.20

Finding the Fourth Proportional to 82,028,714.40, 123,043,071.60 and 78,534,007.20

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Solution

The fourth proportional to 82,028,714.40, 123,043,071.60 and 78,534,007.20 is: 117,801,010.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,028,714.40 : 123,043,071.60 = 78,534,007.20 : x
  2. Step 2: Convert to fraction form
    82,028,714.40/123,043,071.60 = 78,534,007.20/x
  3. Step 3: Cross multiply
    82,028,714.40x = 123,043,071.60 × 78,534,007.20
  4. Step 4: Simplify right side
    82,028,714.40x = 9,663,065,470,944,516
  5. Step 5: Solve for x
    x = 9,663,065,470,944,516/82,028,714.40
  6. Step 6: Final answer
    x = 117,801,010.80

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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.