Home / 81,445.76-112,395.08-45,636.04

Finding the Fourth Proportional to 81,445.76, 112,395.08 and 45,636.04

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Solution

The fourth proportional to 81,445.76, 112,395.08 and 45,636.04 is: 62,977.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,445.76 : 112,395.08 = 45,636.04 : x
  2. Step 2: Convert to fraction form
    81,445.76/112,395.08 = 45,636.04/x
  3. Step 3: Cross multiply
    81,445.76x = 112,395.08 × 45,636.04
  4. Step 4: Simplify right side
    81,445.76x = 5,129,266,366.68
  5. Step 5: Solve for x
    x = 5,129,266,366.68/81,445.76
  6. Step 6: Final answer
    x = 62,977.70

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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.