Home / 82,028,711.40-123,043,067.10-78,534,004.20

Finding the Fourth Proportional to 82,028,711.40, 123,043,067.10 and 78,534,004.20

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Solution

The fourth proportional to 82,028,711.40, 123,043,067.10 and 78,534,004.20 is: 117,801,006.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,028,711.40 : 123,043,067.10 = 78,534,004.20 : x
  2. Step 2: Convert to fraction form
    82,028,711.40/123,043,067.10 = 78,534,004.20/x
  3. Step 3: Cross multiply
    82,028,711.40x = 123,043,067.10 × 78,534,004.20
  4. Step 4: Simplify right side
    82,028,711.40x = 9,663,064,748,412,282
  5. Step 5: Solve for x
    x = 9,663,064,748,412,282/82,028,711.40
  6. Step 6: Final answer
    x = 117,801,006.30

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1.5x scale

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.