Home / 81,385.46-112,317.27-45,577.78

Finding the Fourth Proportional to 81,385.46, 112,317.27 and 45,577.78

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Solution

The fourth proportional to 81,385.46, 112,317.27 and 45,577.78 is: 62,900.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,385.46 : 112,317.27 = 45,577.78 : x
  2. Step 2: Convert to fraction form
    81,385.46/112,317.27 = 45,577.78/x
  3. Step 3: Cross multiply
    81,385.46x = 112,317.27 × 45,577.78
  4. Step 4: Simplify right side
    81,385.46x = 5,119,171,822.26
  5. Step 5: Solve for x
    x = 5,119,171,822.26/81,385.46
  6. Step 6: Final answer
    x = 62,900.32

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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.