Home / 81,780,130.80-122,565,997.80-43,460,002.80

Finding the Fourth Proportional to 81,780,130.80, 122,565,997.80 and 43,460,002.80

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Solution

The fourth proportional to 81,780,130.80, 122,565,997.80 and 43,460,002.80 is: 65,134,630.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,780,130.80 : 122,565,997.80 = 43,460,002.80 : x
  2. Step 2: Convert to fraction form
    81,780,130.80/122,565,997.80 = 43,460,002.80/x
  3. Step 3: Cross multiply
    81,780,130.80x = 122,565,997.80 × 43,460,002.80
  4. Step 4: Simplify right side
    81,780,130.80x = 5,326,718,607,572,793
  5. Step 5: Solve for x
    x = 5,326,718,607,572,793/81,780,130.80
  6. Step 6: Final answer
    x = 65,134,630.57

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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.