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Finding the Fourth Proportional to 66,448.15, 99,672.22 and 45,608.47

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Solution

The fourth proportional to 66,448.15, 99,672.22 and 45,608.47 is: 68,412.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,448.15 : 99,672.22 = 45,608.47 : x
  2. Step 2: Convert to fraction form
    66,448.15/99,672.22 = 45,608.47/x
  3. Step 3: Cross multiply
    66,448.15x = 99,672.22 × 45,608.47
  4. Step 4: Simplify right side
    66,448.15x = 4,545,896,957.34
  5. Step 5: Solve for x
    x = 4,545,896,957.34/66,448.15
  6. Step 6: Final answer
    x = 68,412.70

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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.