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Finding the Fourth Proportional to 64,220.76, 96,243.60 and 30,938.40

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Solution

The fourth proportional to 64,220.76, 96,243.60 and 30,938.40 is: 46,365.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,220.76 : 96,243.60 = 30,938.40 : x
  2. Step 2: Convert to fraction form
    64,220.76/96,243.60 = 30,938.40/x
  3. Step 3: Cross multiply
    64,220.76x = 96,243.60 × 30,938.40
  4. Step 4: Simplify right side
    64,220.76x = 2,977,622,994.24
  5. Step 5: Solve for x
    x = 2,977,622,994.24/64,220.76
  6. Step 6: Final answer
    x = 46,365.43

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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.