Home / 81,210.08-112,072.38-45,401.60

Finding the Fourth Proportional to 81,210.08, 112,072.38 and 45,401.60

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Solution

The fourth proportional to 81,210.08, 112,072.38 and 45,401.60 is: 62,655.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,210.08 : 112,072.38 = 45,401.60 : x
  2. Step 2: Convert to fraction form
    81,210.08/112,072.38 = 45,401.60/x
  3. Step 3: Cross multiply
    81,210.08x = 112,072.38 × 45,401.60
  4. Step 4: Simplify right side
    81,210.08x = 5,088,265,367.81
  5. Step 5: Solve for x
    x = 5,088,265,367.81/81,210.08
  6. Step 6: Final answer
    x = 62,655.59

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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.