Home / 145,609.80-218,414.58-40,428.72

Finding the Fourth Proportional to 145,609.80, 218,414.58 and 40,428.72

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Solution

The fourth proportional to 145,609.80, 218,414.58 and 40,428.72 is: 60,643.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,609.80 : 218,414.58 = 40,428.72 : x
  2. Step 2: Convert to fraction form
    145,609.80/218,414.58 = 40,428.72/x
  3. Step 3: Cross multiply
    145,609.80x = 218,414.58 × 40,428.72
  4. Step 4: Simplify right side
    145,609.80x = 8,830,221,898.74
  5. Step 5: Solve for x
    x = 8,830,221,898.74/145,609.80
  6. Step 6: Final answer
    x = 60,643.05

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1.5x scale

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.