Home / 81,929.86-113,117.58-51,348.92

Finding the Fourth Proportional to 81,929.86, 113,117.58 and 51,348.92

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Solution

The fourth proportional to 81,929.86, 113,117.58 and 51,348.92 is: 70,895.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,929.86 : 113,117.58 = 51,348.92 : x
  2. Step 2: Convert to fraction form
    81,929.86/113,117.58 = 51,348.92/x
  3. Step 3: Cross multiply
    81,929.86x = 113,117.58 × 51,348.92
  4. Step 4: Simplify right side
    81,929.86x = 5,808,465,000.43
  5. Step 5: Solve for x
    x = 5,808,465,000.43/81,929.86
  6. Step 6: Final answer
    x = 70,895.58

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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.