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Finding the Third Proportional to 18,574,400 and 28,142,072

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Solution

The third proportional to 18,574,400 and 28,142,072 is: 42,638,051.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,574,400 : 28,142,072 = 28,142,072 : x
  2. Step 2: Convert to fraction form
    18,574,400/28,142,072 = 28,142,072/x
  3. Step 3: Cross multiply
    18,574,400x = 28,142,072 × 28,142,072
  4. Step 4: Simplify right side
    18,574,400x = 791,976,216,453,184
  5. Step 5: Solve for x
    x = 791,976,216,453,184/18,574,400
  6. Step 6: Final answer
    x = 42,638,051.11

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.