Home / 145,719.64-218,579.87-40,538.71

Finding the Fourth Proportional to 145,719.64, 218,579.87 and 40,538.71

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Solution

The fourth proportional to 145,719.64, 218,579.87 and 40,538.71 is: 60,808.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,719.64 : 218,579.87 = 40,538.71 : x
  2. Step 2: Convert to fraction form
    145,719.64/218,579.87 = 40,538.71/x
  3. Step 3: Cross multiply
    145,719.64x = 218,579.87 × 40,538.71
  4. Step 4: Simplify right side
    145,719.64x = 8,860,945,961.77
  5. Step 5: Solve for x
    x = 8,860,945,961.77/145,719.64
  6. Step 6: Final answer
    x = 60,808.18

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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.