Home / 76,440.21-105,483.96-42,450.86

Finding the Fourth Proportional to 76,440.21, 105,483.96 and 42,450.86

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Solution

The fourth proportional to 76,440.21, 105,483.96 and 42,450.86 is: 58,580.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,440.21 : 105,483.96 = 42,450.86 : x
  2. Step 2: Convert to fraction form
    76,440.21/105,483.96 = 42,450.86/x
  3. Step 3: Cross multiply
    76,440.21x = 105,483.96 × 42,450.86
  4. Step 4: Simplify right side
    76,440.21x = 4,477,884,290.79
  5. Step 5: Solve for x
    x = 4,477,884,290.79/76,440.21
  6. Step 6: Final answer
    x = 58,580.22

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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.