Home / 78,589.16-108,451.14-45,053

Finding the Fourth Proportional to 78,589.16, 108,451.14 and 45,053

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Solution

The fourth proportional to 78,589.16, 108,451.14 and 45,053 is: 62,172.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,589.16 : 108,451.14 = 45,053 : x
  2. Step 2: Convert to fraction form
    78,589.16/108,451.14 = 45,053/x
  3. Step 3: Cross multiply
    78,589.16x = 108,451.14 × 45,053
  4. Step 4: Simplify right side
    78,589.16x = 4,886,049,210.42
  5. Step 5: Solve for x
    x = 4,886,049,210.42/78,589.16
  6. Step 6: Final answer
    x = 62,172.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.