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Finding the Fourth Proportional to 39,109,618.80, 54,866,840.40 and 39,109,618.80

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Solution

The fourth proportional to 39,109,618.80, 54,866,840.40 and 39,109,618.80 is: 54,866,840.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,109,618.80 : 54,866,840.40 = 39,109,618.80 : x
  2. Step 2: Convert to fraction form
    39,109,618.80/54,866,840.40 = 39,109,618.80/x
  3. Step 3: Cross multiply
    39,109,618.80x = 54,866,840.40 × 39,109,618.80
  4. Step 4: Simplify right side
    39,109,618.80x = 2,145,821,212,804,439.25
  5. Step 5: Solve for x
    x = 2,145,821,212,804,439.25/39,109,618.80
  6. Step 6: Final answer
    x = 54,866,840.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.