Home / 77,068.68-115,651.62-30,315.48

Finding the Fourth Proportional to 77,068.68, 115,651.62 and 30,315.48

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Solution

The fourth proportional to 77,068.68, 115,651.62 and 30,315.48 is: 45,492.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,068.68 : 115,651.62 = 30,315.48 : x
  2. Step 2: Convert to fraction form
    77,068.68/115,651.62 = 30,315.48/x
  3. Step 3: Cross multiply
    77,068.68x = 115,651.62 × 30,315.48
  4. Step 4: Simplify right side
    77,068.68x = 3,506,034,373.08
  5. Step 5: Solve for x
    x = 3,506,034,373.08/77,068.68
  6. Step 6: Final answer
    x = 45,492.34

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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.