Home / 76,421.20-114,631.80-48,427.60

Finding the Fourth Proportional to 76,421.20, 114,631.80 and 48,427.60

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Solution

The fourth proportional to 76,421.20, 114,631.80 and 48,427.60 is: 72,641.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,421.20 : 114,631.80 = 48,427.60 : x
  2. Step 2: Convert to fraction form
    76,421.20/114,631.80 = 48,427.60/x
  3. Step 3: Cross multiply
    76,421.20x = 114,631.80 × 48,427.60
  4. Step 4: Simplify right side
    76,421.20x = 5,551,342,957.68
  5. Step 5: Solve for x
    x = 5,551,342,957.68/76,421.20
  6. Step 6: Final answer
    x = 72,641.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.