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Finding the Fourth Proportional to 61,296.40, 91,944.60 and 21,854.80

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Solution

The fourth proportional to 61,296.40, 91,944.60 and 21,854.80 is: 32,782.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,296.40 : 91,944.60 = 21,854.80 : x
  2. Step 2: Convert to fraction form
    61,296.40/91,944.60 = 21,854.80/x
  3. Step 3: Cross multiply
    61,296.40x = 91,944.60 × 21,854.80
  4. Step 4: Simplify right side
    61,296.40x = 2,009,430,844.08
  5. Step 5: Solve for x
    x = 2,009,430,844.08/61,296.40
  6. Step 6: Final answer
    x = 32,782.20

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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.