Home / 45,390.12-68,068.17-20,429.16

Finding the Fourth Proportional to 45,390.12, 68,068.17 and 20,429.16

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Solution

The fourth proportional to 45,390.12, 68,068.17 and 20,429.16 is: 30,636.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,390.12 : 68,068.17 = 20,429.16 : x
  2. Step 2: Convert to fraction form
    45,390.12/68,068.17 = 20,429.16/x
  3. Step 3: Cross multiply
    45,390.12x = 68,068.17 × 20,429.16
  4. Step 4: Simplify right side
    45,390.12x = 1,390,575,535.84
  5. Step 5: Solve for x
    x = 1,390,575,535.84/45,390.12
  6. Step 6: Final answer
    x = 30,636.08

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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.