Home / 85,803,684.84-128,533,202.82-39,680,904.60

Finding the Fourth Proportional to 85,803,684.84, 128,533,202.82 and 39,680,904.60

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Solution

The fourth proportional to 85,803,684.84, 128,533,202.82 and 39,680,904.60 is: 59,441,663.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,803,684.84 : 128,533,202.82 = 39,680,904.60 : x
  2. Step 2: Convert to fraction form
    85,803,684.84/128,533,202.82 = 39,680,904.60/x
  3. Step 3: Cross multiply
    85,803,684.84x = 128,533,202.82 × 39,680,904.60
  4. Step 4: Simplify right side
    85,803,684.84x = 5,100,313,759,032,871
  5. Step 5: Solve for x
    x = 5,100,313,759,032,871/85,803,684.84
  6. Step 6: Final answer
    x = 59,441,663.47

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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.