Home / 80,772.48-121,178.16-34,038.72

Finding the Fourth Proportional to 80,772.48, 121,178.16 and 34,038.72

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Solution

The fourth proportional to 80,772.48, 121,178.16 and 34,038.72 is: 51,066.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,772.48 : 121,178.16 = 34,038.72 : x
  2. Step 2: Convert to fraction form
    80,772.48/121,178.16 = 34,038.72/x
  3. Step 3: Cross multiply
    80,772.48x = 121,178.16 × 34,038.72
  4. Step 4: Simplify right side
    80,772.48x = 4,124,749,458.36
  5. Step 5: Solve for x
    x = 4,124,749,458.36/80,772.48
  6. Step 6: Final answer
    x = 51,066.27

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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.