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Finding the Fourth Proportional to 64,509.80, 96,764.70 and 48,763.40

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Solution

The fourth proportional to 64,509.80, 96,764.70 and 48,763.40 is: 73,145.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,509.80 : 96,764.70 = 48,763.40 : x
  2. Step 2: Convert to fraction form
    64,509.80/96,764.70 = 48,763.40/x
  3. Step 3: Cross multiply
    64,509.80x = 96,764.70 × 48,763.40
  4. Step 4: Simplify right side
    64,509.80x = 4,718,575,771.98
  5. Step 5: Solve for x
    x = 4,718,575,771.98/64,509.80
  6. Step 6: Final answer
    x = 73,145.10

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Similar ratio
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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.