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Finding the Fourth Proportional to 64,925.80, 97,311.90 and 48,490.60

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Solution

The fourth proportional to 64,925.80, 97,311.90 and 48,490.60 is: 72,678.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,925.80 : 97,311.90 = 48,490.60 : x
  2. Step 2: Convert to fraction form
    64,925.80/97,311.90 = 48,490.60/x
  3. Step 3: Cross multiply
    64,925.80x = 97,311.90 × 48,490.60
  4. Step 4: Simplify right side
    64,925.80x = 4,718,712,418.14
  5. Step 5: Solve for x
    x = 4,718,712,418.14/64,925.80
  6. Step 6: Final answer
    x = 72,678.54

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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.