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Finding the Fourth Proportional to 64,362.60, 96,608.70 and 31,109.40

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Solution

The fourth proportional to 64,362.60, 96,608.70 and 31,109.40 is: 46,695.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,362.60 : 96,608.70 = 31,109.40 : x
  2. Step 2: Convert to fraction form
    64,362.60/96,608.70 = 31,109.40/x
  3. Step 3: Cross multiply
    64,362.60x = 96,608.70 × 31,109.40
  4. Step 4: Simplify right side
    64,362.60x = 3,005,438,691.78
  5. Step 5: Solve for x
    x = 3,005,438,691.78/64,362.60
  6. Step 6: Final answer
    x = 46,695.42

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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.