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Finding the Fourth Proportional to 64,386.40, 96,608.40 and 31,093.60

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Solution

The fourth proportional to 64,386.40, 96,608.40 and 31,093.60 is: 46,654.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,386.40 : 96,608.40 = 31,093.60 : x
  2. Step 2: Convert to fraction form
    64,386.40/96,608.40 = 31,093.60/x
  3. Step 3: Cross multiply
    64,386.40x = 96,608.40 × 31,093.60
  4. Step 4: Simplify right side
    64,386.40x = 3,003,902,946.24
  5. Step 5: Solve for x
    x = 3,003,902,946.24/64,386.40
  6. Step 6: Final answer
    x = 46,654.31

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1.5x scale

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.