Home / 85,634,145.45-128,422,428.99-31,035,302.23

Finding the Fourth Proportional to 85,634,145.45, 128,422,428.99 and 31,035,302.23

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Solution

The fourth proportional to 85,634,145.45, 128,422,428.99 and 31,035,302.23 is: 46,542,519.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,634,145.45 : 128,422,428.99 = 31,035,302.23 : x
  2. Step 2: Convert to fraction form
    85,634,145.45/128,422,428.99 = 31,035,302.23/x
  3. Step 3: Cross multiply
    85,634,145.45x = 128,422,428.99 × 31,035,302.23
  4. Step 4: Simplify right side
    85,634,145.45x = 3,985,628,896,815,363.50
  5. Step 5: Solve for x
    x = 3,985,628,896,815,363.50/85,634,145.45
  6. Step 6: Final answer
    x = 46,542,519.64

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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.