Home / 76,129.40-114,323.70-56,430.20

Finding the Fourth Proportional to 76,129.40, 114,323.70 and 56,430.20

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Solution

The fourth proportional to 76,129.40, 114,323.70 and 56,430.20 is: 84,741.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,129.40 : 114,323.70 = 56,430.20 : x
  2. Step 2: Convert to fraction form
    76,129.40/114,323.70 = 56,430.20/x
  3. Step 3: Cross multiply
    76,129.40x = 114,323.70 × 56,430.20
  4. Step 4: Simplify right side
    76,129.40x = 6,451,309,255.74
  5. Step 5: Solve for x
    x = 6,451,309,255.74/76,129.40
  6. Step 6: Final answer
    x = 84,741.36

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1.5x scale

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.