Home / 78,616.93-108,493.68-42,808.45

Finding the Fourth Proportional to 78,616.93, 108,493.68 and 42,808.45

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Solution

The fourth proportional to 78,616.93, 108,493.68 and 42,808.45 is: 59,076.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,616.93 : 108,493.68 = 42,808.45 : x
  2. Step 2: Convert to fraction form
    78,616.93/108,493.68 = 42,808.45/x
  3. Step 3: Cross multiply
    78,616.93x = 108,493.68 × 42,808.45
  4. Step 4: Simplify right side
    78,616.93x = 4,644,446,275.60
  5. Step 5: Solve for x
    x = 4,644,446,275.60/78,616.93
  6. Step 6: Final answer
    x = 59,076.92

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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.