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Finding the Fourth Proportional to 64,934.60, 97,401.90 and 53,999.60

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Solution

The fourth proportional to 64,934.60, 97,401.90 and 53,999.60 is: 80,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,934.60 : 97,401.90 = 53,999.60 : x
  2. Step 2: Convert to fraction form
    64,934.60/97,401.90 = 53,999.60/x
  3. Step 3: Cross multiply
    64,934.60x = 97,401.90 × 53,999.60
  4. Step 4: Simplify right side
    64,934.60x = 5,259,663,639.24
  5. Step 5: Solve for x
    x = 5,259,663,639.24/64,934.60
  6. Step 6: Final answer
    x = 80,999.40

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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.