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Finding the Fourth Proportional to 64,480.60, 96,720.90 and 42,362.20

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Solution

The fourth proportional to 64,480.60, 96,720.90 and 42,362.20 is: 63,543.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,480.60 : 96,720.90 = 42,362.20 : x
  2. Step 2: Convert to fraction form
    64,480.60/96,720.90 = 42,362.20/x
  3. Step 3: Cross multiply
    64,480.60x = 96,720.90 × 42,362.20
  4. Step 4: Simplify right side
    64,480.60x = 4,097,310,109.98
  5. Step 5: Solve for x
    x = 4,097,310,109.98/64,480.60
  6. Step 6: Final answer
    x = 63,543.30

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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.