Home / 76,437.36-105,485.40-42,906.48

Finding the Fourth Proportional to 76,437.36, 105,485.40 and 42,906.48

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Solution

The fourth proportional to 76,437.36, 105,485.40 and 42,906.48 is: 59,211.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,437.36 : 105,485.40 = 42,906.48 : x
  2. Step 2: Convert to fraction form
    76,437.36/105,485.40 = 42,906.48/x
  3. Step 3: Cross multiply
    76,437.36x = 105,485.40 × 42,906.48
  4. Step 4: Simplify right side
    76,437.36x = 4,526,007,205.39
  5. Step 5: Solve for x
    x = 4,526,007,205.39/76,437.36
  6. Step 6: Final answer
    x = 59,211.98

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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.