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Finding the Fourth Proportional to 84,920,601.60, 127,191,945.60 and 69,804,057.60

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Solution

The fourth proportional to 84,920,601.60, 127,191,945.60 and 69,804,057.60 is: 104,550,765.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,920,601.60 : 127,191,945.60 = 69,804,057.60 : x
  2. Step 2: Convert to fraction form
    84,920,601.60/127,191,945.60 = 69,804,057.60/x
  3. Step 3: Cross multiply
    84,920,601.60x = 127,191,945.60 × 69,804,057.60
  4. Step 4: Simplify right side
    84,920,601.60x = 8,878,513,896,918,465
  5. Step 5: Solve for x
    x = 8,878,513,896,918,465/84,920,601.60
  6. Step 6: Final answer
    x = 104,550,765.42

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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.