Home / 81,470.64-112,433.96-45,672.16

Finding the Fourth Proportional to 81,470.64, 112,433.96 and 45,672.16

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Solution

The fourth proportional to 81,470.64, 112,433.96 and 45,672.16 is: 63,030.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,470.64 : 112,433.96 = 45,672.16 : x
  2. Step 2: Convert to fraction form
    81,470.64/112,433.96 = 45,672.16/x
  3. Step 3: Cross multiply
    81,470.64x = 112,433.96 × 45,672.16
  4. Step 4: Simplify right side
    81,470.64x = 5,135,101,810.55
  5. Step 5: Solve for x
    x = 5,135,101,810.55/81,470.64
  6. Step 6: Final answer
    x = 63,030.09

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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.