Home / 81,642.37-112,646.75-47,631.44

Finding the Fourth Proportional to 81,642.37, 112,646.75 and 47,631.44

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Solution

The fourth proportional to 81,642.37, 112,646.75 and 47,631.44 is: 65,719.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,642.37 : 112,646.75 = 47,631.44 : x
  2. Step 2: Convert to fraction form
    81,642.37/112,646.75 = 47,631.44/x
  3. Step 3: Cross multiply
    81,642.37x = 112,646.75 × 47,631.44
  4. Step 4: Simplify right side
    81,642.37x = 5,365,527,225.21
  5. Step 5: Solve for x
    x = 5,365,527,225.21/81,642.37
  6. Step 6: Final answer
    x = 65,719.89

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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.