Home / 81,478.16-112,439.50-45,668.18

Finding the Fourth Proportional to 81,478.16, 112,439.50 and 45,668.18

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Solution

The fourth proportional to 81,478.16, 112,439.50 and 45,668.18 is: 63,021.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,478.16 : 112,439.50 = 45,668.18 : x
  2. Step 2: Convert to fraction form
    81,478.16/112,439.50 = 45,668.18/x
  3. Step 3: Cross multiply
    81,478.16x = 112,439.50 × 45,668.18
  4. Step 4: Simplify right side
    81,478.16x = 5,134,907,325.11
  5. Step 5: Solve for x
    x = 5,134,907,325.11/81,478.16
  6. Step 6: Final answer
    x = 63,021.89

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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.