Home / 76,800.44-105,985.08-42,811.08

Finding the Fourth Proportional to 76,800.44, 105,985.08 and 42,811.08

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Solution

The fourth proportional to 76,800.44, 105,985.08 and 42,811.08 is: 59,079.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,800.44 : 105,985.08 = 42,811.08 : x
  2. Step 2: Convert to fraction form
    76,800.44/105,985.08 = 42,811.08/x
  3. Step 3: Cross multiply
    76,800.44x = 105,985.08 × 42,811.08
  4. Step 4: Simplify right side
    76,800.44x = 4,537,335,738.69
  5. Step 5: Solve for x
    x = 4,537,335,738.69/76,800.44
  6. Step 6: Final answer
    x = 59,079.56

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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.