Home / 78,333.77-108,100.49-42,523.80

Finding the Fourth Proportional to 78,333.77, 108,100.49 and 42,523.80

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Solution

The fourth proportional to 78,333.77, 108,100.49 and 42,523.80 is: 58,682.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,333.77 : 108,100.49 = 42,523.80 : x
  2. Step 2: Convert to fraction form
    78,333.77/108,100.49 = 42,523.80/x
  3. Step 3: Cross multiply
    78,333.77x = 108,100.49 × 42,523.80
  4. Step 4: Simplify right side
    78,333.77x = 4,596,842,998.67
  5. Step 5: Solve for x
    x = 4,596,842,998.67/78,333.77
  6. Step 6: Final answer
    x = 58,682.77

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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.