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Finding the Fourth Proportional to 145,700.66, 218,551.23 and 40,519.70

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Solution

The fourth proportional to 145,700.66, 218,551.23 and 40,519.70 is: 60,779.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,700.66 : 218,551.23 = 40,519.70 : x
  2. Step 2: Convert to fraction form
    145,700.66/218,551.23 = 40,519.70/x
  3. Step 3: Cross multiply
    145,700.66x = 218,551.23 × 40,519.70
  4. Step 4: Simplify right side
    145,700.66x = 8,855,630,274.23
  5. Step 5: Solve for x
    x = 8,855,630,274.23/145,700.66
  6. Step 6: Final answer
    x = 60,779.62

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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.