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Finding the Fourth Proportional to 61,347.60, 84,623.60 and 38,646.54

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Solution

The fourth proportional to 61,347.60, 84,623.60 and 38,646.54 is: 53,309.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,347.60 : 84,623.60 = 38,646.54 : x
  2. Step 2: Convert to fraction form
    61,347.60/84,623.60 = 38,646.54/x
  3. Step 3: Cross multiply
    61,347.60x = 84,623.60 × 38,646.54
  4. Step 4: Simplify right side
    61,347.60x = 3,270,409,438.96
  5. Step 5: Solve for x
    x = 3,270,409,438.96/61,347.60
  6. Step 6: Final answer
    x = 53,309.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.