Home / 76,129,920-105,045,742.08-43,090,007.04

Finding the Fourth Proportional to 76,129,920, 105,045,742.08 and 43,090,007.04

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Solution

The fourth proportional to 76,129,920, 105,045,742.08 and 43,090,007.04 is: 59,456,541.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,129,920 : 105,045,742.08 = 43,090,007.04 : x
  2. Step 2: Convert to fraction form
    76,129,920/105,045,742.08 = 43,090,007.04/x
  3. Step 3: Cross multiply
    76,129,920x = 105,045,742.08 × 43,090,007.04
  4. Step 4: Simplify right side
    76,129,920x = 4,526,421,765,749,224
  5. Step 5: Solve for x
    x = 4,526,421,765,749,224/76,129,920
  6. Step 6: Final answer
    x = 59,456,541.73

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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.