Home / 85,811,268.30-128,716,902.45-39,753,048.30

Finding the Fourth Proportional to 85,811,268.30, 128,716,902.45 and 39,753,048.30

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Solution

The fourth proportional to 85,811,268.30, 128,716,902.45 and 39,753,048.30 is: 59,629,572.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,811,268.30 : 128,716,902.45 = 39,753,048.30 : x
  2. Step 2: Convert to fraction form
    85,811,268.30/128,716,902.45 = 39,753,048.30/x
  3. Step 3: Cross multiply
    85,811,268.30x = 128,716,902.45 × 39,753,048.30
  4. Step 4: Simplify right side
    85,811,268.30x = 5,116,889,240,121,238
  5. Step 5: Solve for x
    x = 5,116,889,240,121,238/85,811,268.30
  6. Step 6: Final answer
    x = 59,629,572.45

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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.