Home / 81,207.72-112,068.96-45,401.76

Finding the Fourth Proportional to 81,207.72, 112,068.96 and 45,401.76

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Solution

The fourth proportional to 81,207.72, 112,068.96 and 45,401.76 is: 62,655.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,207.72 : 112,068.96 = 45,401.76 : x
  2. Step 2: Convert to fraction form
    81,207.72/112,068.96 = 45,401.76/x
  3. Step 3: Cross multiply
    81,207.72x = 112,068.96 × 45,401.76
  4. Step 4: Simplify right side
    81,207.72x = 5,088,128,025.37
  5. Step 5: Solve for x
    x = 5,088,128,025.37/81,207.72
  6. Step 6: Final answer
    x = 62,655.72

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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.