Home / 81,256,689.69-121,856,691-35,793,683.61

Finding the Fourth Proportional to 81,256,689.69, 121,856,691 and 35,793,683.61

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Solution

The fourth proportional to 81,256,689.69, 121,856,691 and 35,793,683.61 is: 53,678,040.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,256,689.69 : 121,856,691 = 35,793,683.61 : x
  2. Step 2: Convert to fraction form
    81,256,689.69/121,856,691 = 35,793,683.61/x
  3. Step 3: Cross multiply
    81,256,689.69x = 121,856,691 × 35,793,683.61
  4. Step 4: Simplify right side
    81,256,689.69x = 4,361,699,843,415,534.50
  5. Step 5: Solve for x
    x = 4,361,699,843,415,534.50/81,256,689.69
  6. Step 6: Final answer
    x = 53,678,040.05

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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.