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Finding the Fourth Proportional to 78,477.88, 108,298.68 and 58,424.44

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Solution

The fourth proportional to 78,477.88, 108,298.68 and 58,424.44 is: 80,625.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,477.88 : 108,298.68 = 58,424.44 : x
  2. Step 2: Convert to fraction form
    78,477.88/108,298.68 = 58,424.44/x
  3. Step 3: Cross multiply
    78,477.88x = 108,298.68 × 58,424.44
  4. Step 4: Simplify right side
    78,477.88x = 6,327,289,731.74
  5. Step 5: Solve for x
    x = 6,327,289,731.74/78,477.88
  6. Step 6: Final answer
    x = 80,625.14

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1.5x scale

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.