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Finding the Third Proportional to 18,688,830.75 and 28,291,448.25

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Solution

The third proportional to 18,688,830.75 and 28,291,448.25 is: 42,828,042.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688,830.75 : 28,291,448.25 = 28,291,448.25 : x
  2. Step 2: Convert to fraction form
    18,688,830.75/28,291,448.25 = 28,291,448.25/x
  3. Step 3: Cross multiply
    18,688,830.75x = 28,291,448.25 × 28,291,448.25
  4. Step 4: Simplify right side
    18,688,830.75x = 800,406,044,082,428
  5. Step 5: Solve for x
    x = 800,406,044,082,428/18,688,830.75
  6. Step 6: Final answer
    x = 42,828,042.84

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.