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Finding the Fourth Proportional to 43,290,698.80, 64,936,048.20 and 26,851,457.20

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Solution

The fourth proportional to 43,290,698.80, 64,936,048.20 and 26,851,457.20 is: 40,277,185.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,290,698.80 : 64,936,048.20 = 26,851,457.20 : x
  2. Step 2: Convert to fraction form
    43,290,698.80/64,936,048.20 = 26,851,457.20/x
  3. Step 3: Cross multiply
    43,290,698.80x = 64,936,048.20 × 26,851,457.20
  4. Step 4: Simplify right side
    43,290,698.80x = 1,743,627,518,979,437
  5. Step 5: Solve for x
    x = 1,743,627,518,979,437/43,290,698.80
  6. Step 6: Final answer
    x = 40,277,185.80

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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.