Home / 81,816.08-112,777.53-74,951.63

Finding the Fourth Proportional to 81,816.08, 112,777.53 and 74,951.63

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Solution

The fourth proportional to 81,816.08, 112,777.53 and 74,951.63 is: 103,315.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,816.08 : 112,777.53 = 74,951.63 : x
  2. Step 2: Convert to fraction form
    81,816.08/112,777.53 = 74,951.63/x
  3. Step 3: Cross multiply
    81,816.08x = 112,777.53 × 74,951.63
  4. Step 4: Simplify right side
    81,816.08x = 8,452,860,334.81
  5. Step 5: Solve for x
    x = 8,452,860,334.81/81,816.08
  6. Step 6: Final answer
    x = 103,315.39

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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.