Home / 81,256,681.69-121,856,679-35,793,675.61

Finding the Fourth Proportional to 81,256,681.69, 121,856,679 and 35,793,675.61

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Solution

The fourth proportional to 81,256,681.69, 121,856,679 and 35,793,675.61 is: 53,678,028.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,256,681.69 : 121,856,679 = 35,793,675.61 : x
  2. Step 2: Convert to fraction form
    81,256,681.69/121,856,679 = 35,793,675.61/x
  3. Step 3: Cross multiply
    81,256,681.69x = 121,856,679 × 35,793,675.61
  4. Step 4: Simplify right side
    81,256,681.69x = 4,361,698,439,037,899
  5. Step 5: Solve for x
    x = 4,361,698,439,037,899/81,256,681.69
  6. Step 6: Final answer
    x = 53,678,028.05

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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.