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Finding the Fourth Proportional to 64,978.40, 97,467.60 and 36,887.60

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Solution

The fourth proportional to 64,978.40, 97,467.60 and 36,887.60 is: 55,331.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,978.40 : 97,467.60 = 36,887.60 : x
  2. Step 2: Convert to fraction form
    64,978.40/97,467.60 = 36,887.60/x
  3. Step 3: Cross multiply
    64,978.40x = 97,467.60 × 36,887.60
  4. Step 4: Simplify right side
    64,978.40x = 3,595,345,841.76
  5. Step 5: Solve for x
    x = 3,595,345,841.76/64,978.40
  6. Step 6: Final answer
    x = 55,331.40

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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.