Home / 76,573.12-105,680.40-43,039.12

Finding the Fourth Proportional to 76,573.12, 105,680.40 and 43,039.12

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Solution

The fourth proportional to 76,573.12, 105,680.40 and 43,039.12 is: 59,399.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,573.12 : 105,680.40 = 43,039.12 : x
  2. Step 2: Convert to fraction form
    76,573.12/105,680.40 = 43,039.12/x
  3. Step 3: Cross multiply
    76,573.12x = 105,680.40 × 43,039.12
  4. Step 4: Simplify right side
    76,573.12x = 4,548,391,417.25
  5. Step 5: Solve for x
    x = 4,548,391,417.25/76,573.12
  6. Step 6: Final answer
    x = 59,399.32

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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.