Home / 85,682,277.29-128,527,549.38-28,173,275.21

Finding the Fourth Proportional to 85,682,277.29, 128,527,549.38 and 28,173,275.21

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Solution

The fourth proportional to 85,682,277.29, 128,527,549.38 and 28,173,275.21 is: 42,261,271.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,682,277.29 : 128,527,549.38 = 28,173,275.21 : x
  2. Step 2: Convert to fraction form
    85,682,277.29/128,527,549.38 = 28,173,275.21/x
  3. Step 3: Cross multiply
    85,682,277.29x = 128,527,549.38 × 28,173,275.21
  4. Step 4: Simplify right side
    85,682,277.29x = 3,621,042,020,106,967
  5. Step 5: Solve for x
    x = 3,621,042,020,106,967/85,682,277.29
  6. Step 6: Final answer
    x = 42,261,271.93

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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.