Home / 78,541.32-117,820.24-45,298.92

Finding the Fourth Proportional to 78,541.32, 117,820.24 and 45,298.92

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Solution

The fourth proportional to 78,541.32, 117,820.24 and 45,298.92 is: 67,953.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,541.32 : 117,820.24 = 45,298.92 : x
  2. Step 2: Convert to fraction form
    78,541.32/117,820.24 = 45,298.92/x
  3. Step 3: Cross multiply
    78,541.32x = 117,820.24 × 45,298.92
  4. Step 4: Simplify right side
    78,541.32x = 5,337,129,626.14
  5. Step 5: Solve for x
    x = 5,337,129,626.14/78,541.32
  6. Step 6: Final answer
    x = 67,953.14

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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.