Home / 81,931.86-113,120.34-51,350.92

Finding the Fourth Proportional to 81,931.86, 113,120.34 and 51,350.92

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Solution

The fourth proportional to 81,931.86, 113,120.34 and 51,350.92 is: 70,898.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,931.86 : 113,120.34 = 51,350.92 : x
  2. Step 2: Convert to fraction form
    81,931.86/113,120.34 = 51,350.92/x
  3. Step 3: Cross multiply
    81,931.86x = 113,120.34 × 51,350.92
  4. Step 4: Simplify right side
    81,931.86x = 5,808,833,529.71
  5. Step 5: Solve for x
    x = 5,808,833,529.71/81,931.86
  6. Step 6: Final answer
    x = 70,898.35

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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.