Home / 83,775.09-125,703.63-39,406.32

Finding the Fourth Proportional to 83,775.09, 125,703.63 and 39,406.32

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Solution

The fourth proportional to 83,775.09, 125,703.63 and 39,406.32 is: 59,128.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,775.09 : 125,703.63 = 39,406.32 : x
  2. Step 2: Convert to fraction form
    83,775.09/125,703.63 = 39,406.32/x
  3. Step 3: Cross multiply
    83,775.09x = 125,703.63 × 39,406.32
  4. Step 4: Simplify right side
    83,775.09x = 4,953,517,468.94
  5. Step 5: Solve for x
    x = 4,953,517,468.94/83,775.09
  6. Step 6: Final answer
    x = 59,128.76

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1.5x scale

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.