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Finding the Fourth Proportional to 28,666,138.68, 40,245,968.23 and 28,666,138.68

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Solution

The fourth proportional to 28,666,138.68, 40,245,968.23 and 28,666,138.68 is: 40,245,968.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,666,138.68 : 40,245,968.23 = 28,666,138.68 : x
  2. Step 2: Convert to fraction form
    28,666,138.68/40,245,968.23 = 28,666,138.68/x
  3. Step 3: Cross multiply
    28,666,138.68x = 40,245,968.23 × 28,666,138.68
  4. Step 4: Simplify right side
    28,666,138.68x = 1,153,696,506,247,493.75
  5. Step 5: Solve for x
    x = 1,153,696,506,247,493.75/28,666,138.68
  6. Step 6: Final answer
    x = 40,245,968.23

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.