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Finding the Fourth Proportional to 64,505.80, 96,758.70 and 48,759.40

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Solution

The fourth proportional to 64,505.80, 96,758.70 and 48,759.40 is: 73,139.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,505.80 : 96,758.70 = 48,759.40 : x
  2. Step 2: Convert to fraction form
    64,505.80/96,758.70 = 48,759.40/x
  3. Step 3: Cross multiply
    64,505.80x = 96,758.70 × 48,759.40
  4. Step 4: Simplify right side
    64,505.80x = 4,717,896,156.78
  5. Step 5: Solve for x
    x = 4,717,896,156.78/64,505.80
  6. Step 6: Final answer
    x = 73,139.10

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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.