Home / 81,261.55-112,141.65-45,454.89

Finding the Fourth Proportional to 81,261.55, 112,141.65 and 45,454.89

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Solution

The fourth proportional to 81,261.55, 112,141.65 and 45,454.89 is: 62,728.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,261.55 : 112,141.65 = 45,454.89 : x
  2. Step 2: Convert to fraction form
    81,261.55/112,141.65 = 45,454.89/x
  3. Step 3: Cross multiply
    81,261.55x = 112,141.65 × 45,454.89
  4. Step 4: Simplify right side
    81,261.55x = 5,097,386,365.17
  5. Step 5: Solve for x
    x = 5,097,386,365.17/81,261.55
  6. Step 6: Final answer
    x = 62,728.15

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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.