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Finding the Fourth Proportional to 64,745.60, 97,060.80 and 38,422.40

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Solution

The fourth proportional to 64,745.60, 97,060.80 and 38,422.40 is: 57,599.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,745.60 : 97,060.80 = 38,422.40 : x
  2. Step 2: Convert to fraction form
    64,745.60/97,060.80 = 38,422.40/x
  3. Step 3: Cross multiply
    64,745.60x = 97,060.80 × 38,422.40
  4. Step 4: Simplify right side
    64,745.60x = 3,729,308,881.92
  5. Step 5: Solve for x
    x = 3,729,308,881.92/64,745.60
  6. Step 6: Final answer
    x = 57,599.42

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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.