Home / 105,479.54-145,556.15-57,723.66

Finding the Fourth Proportional to 105,479.54, 145,556.15 and 57,723.66

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Solution

The fourth proportional to 105,479.54, 145,556.15 and 57,723.66 is: 79,655.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,479.54 : 145,556.15 = 57,723.66 : x
  2. Step 2: Convert to fraction form
    105,479.54/145,556.15 = 57,723.66/x
  3. Step 3: Cross multiply
    105,479.54x = 145,556.15 × 57,723.66
  4. Step 4: Simplify right side
    105,479.54x = 8,402,033,857.82
  5. Step 5: Solve for x
    x = 8,402,033,857.82/105,479.54
  6. Step 6: Final answer
    x = 79,655.58

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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.