Home / 85,682,278.79-128,527,551.63-28,173,276.71

Finding the Fourth Proportional to 85,682,278.79, 128,527,551.63 and 28,173,276.71

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Solution

The fourth proportional to 85,682,278.79, 128,527,551.63 and 28,173,276.71 is: 42,261,274.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,682,278.79 : 128,527,551.63 = 28,173,276.71 : x
  2. Step 2: Convert to fraction form
    85,682,278.79/128,527,551.63 = 28,173,276.71/x
  3. Step 3: Cross multiply
    85,682,278.79x = 128,527,551.63 × 28,173,276.71
  4. Step 4: Simplify right side
    85,682,278.79x = 3,621,042,276,288,163.50
  5. Step 5: Solve for x
    x = 3,621,042,276,288,163.50/85,682,278.79
  6. Step 6: Final answer
    x = 42,261,274.18

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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.