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Finding the Fourth Proportional to 145,719.77, 218,580.05 and 40,538.84

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Solution

The fourth proportional to 145,719.77, 218,580.05 and 40,538.84 is: 60,808.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,719.77 : 218,580.05 = 40,538.84 : x
  2. Step 2: Convert to fraction form
    145,719.77/218,580.05 = 40,538.84/x
  3. Step 3: Cross multiply
    145,719.77x = 218,580.05 × 40,538.84
  4. Step 4: Simplify right side
    145,719.77x = 8,860,980,682.59
  5. Step 5: Solve for x
    x = 8,860,980,682.59/145,719.77
  6. Step 6: Final answer
    x = 60,808.37

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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.