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Finding the Fourth Proportional to 145,480.15, 218,220.49 and 45,648.01

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Solution

The fourth proportional to 145,480.15, 218,220.49 and 45,648.01 is: 68,472.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,480.15 : 218,220.49 = 45,648.01 : x
  2. Step 2: Convert to fraction form
    145,480.15/218,220.49 = 45,648.01/x
  3. Step 3: Cross multiply
    145,480.15x = 218,220.49 × 45,648.01
  4. Step 4: Simplify right side
    145,480.15x = 9,961,330,995.60
  5. Step 5: Solve for x
    x = 9,961,330,995.60/145,480.15
  6. Step 6: Final answer
    x = 68,472.10

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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.