Home / 76,338.08-105,298.08-55,148.48

Finding the Fourth Proportional to 76,338.08, 105,298.08 and 55,148.48

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Solution

The fourth proportional to 76,338.08, 105,298.08 and 55,148.48 is: 76,069.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,338.08 : 105,298.08 = 55,148.48 : x
  2. Step 2: Convert to fraction form
    76,338.08/105,298.08 = 55,148.48/x
  3. Step 3: Cross multiply
    76,338.08x = 105,298.08 × 55,148.48
  4. Step 4: Simplify right side
    76,338.08x = 5,807,029,058.92
  5. Step 5: Solve for x
    x = 5,807,029,058.92/76,338.08
  6. Step 6: Final answer
    x = 76,069.89

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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.