Home / 85,811,268.80-128,716,903.20-39,753,048.80

Finding the Fourth Proportional to 85,811,268.80, 128,716,903.20 and 39,753,048.80

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Solution

The fourth proportional to 85,811,268.80, 128,716,903.20 and 39,753,048.80 is: 59,629,573.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,811,268.80 : 128,716,903.20 = 39,753,048.80 : x
  2. Step 2: Convert to fraction form
    85,811,268.80/128,716,903.20 = 39,753,048.80/x
  3. Step 3: Cross multiply
    85,811,268.80x = 128,716,903.20 × 39,753,048.80
  4. Step 4: Simplify right side
    85,811,268.80x = 5,116,889,334,294,476
  5. Step 5: Solve for x
    x = 5,116,889,334,294,476/85,811,268.80
  6. Step 6: Final answer
    x = 59,629,573.20

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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.