Home / 85,850,629.92-128,776,017.60-21,154,443.84

Finding the Fourth Proportional to 85,850,629.92, 128,776,017.60 and 21,154,443.84

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Solution

The fourth proportional to 85,850,629.92, 128,776,017.60 and 21,154,443.84 is: 31,731,683.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,850,629.92 : 128,776,017.60 = 21,154,443.84 : x
  2. Step 2: Convert to fraction form
    85,850,629.92/128,776,017.60 = 21,154,443.84/x
  3. Step 3: Cross multiply
    85,850,629.92x = 128,776,017.60 × 21,154,443.84
  4. Step 4: Simplify right side
    85,850,629.92x = 2,724,185,032,258,051.50
  5. Step 5: Solve for x
    x = 2,724,185,032,258,051.50/85,850,629.92
  6. Step 6: Final answer
    x = 31,731,683.68

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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.