Home / 72,866,636.51-109,283,832.11-21,039,989.46

Finding the Fourth Proportional to 72,866,636.51, 109,283,832.11 and 21,039,989.46

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Solution

The fourth proportional to 72,866,636.51, 109,283,832.11 and 21,039,989.46 is: 31,555,328.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,866,636.51 : 109,283,832.11 = 21,039,989.46 : x
  2. Step 2: Convert to fraction form
    72,866,636.51/109,283,832.11 = 21,039,989.46/x
  3. Step 3: Cross multiply
    72,866,636.51x = 109,283,832.11 × 21,039,989.46
  4. Step 4: Simplify right side
    72,866,636.51x = 2,299,330,675,385,595
  5. Step 5: Solve for x
    x = 2,299,330,675,385,595/72,866,636.51
  6. Step 6: Final answer
    x = 31,555,328.83

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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.