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Finding the Fourth Proportional to 145,479.15, 218,218.98 and 45,647.01

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Solution

The fourth proportional to 145,479.15, 218,218.98 and 45,647.01 is: 68,470.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,479.15 : 218,218.98 = 45,647.01 : x
  2. Step 2: Convert to fraction form
    145,479.15/218,218.98 = 45,647.01/x
  3. Step 3: Cross multiply
    145,479.15x = 218,218.98 × 45,647.01
  4. Step 4: Simplify right side
    145,479.15x = 9,961,044,133.43
  5. Step 5: Solve for x
    x = 9,961,044,133.43/145,479.15
  6. Step 6: Final answer
    x = 68,470.60

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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.