Home / 99,685.77-137,587.71-57,267.69

Finding the Fourth Proportional to 99,685.77, 137,587.71 and 57,267.69

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Solution

The fourth proportional to 99,685.77, 137,587.71 and 57,267.69 is: 79,041.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,685.77 : 137,587.71 = 57,267.69 : x
  2. Step 2: Convert to fraction form
    99,685.77/137,587.71 = 57,267.69/x
  3. Step 3: Cross multiply
    99,685.77x = 137,587.71 × 57,267.69
  4. Step 4: Simplify right side
    99,685.77x = 7,879,330,324.09
  5. Step 5: Solve for x
    x = 7,879,330,324.09/99,685.77
  6. Step 6: Final answer
    x = 79,041.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.