Home / 91,051.68-125,456.40-61,191.84

Finding the Fourth Proportional to 91,051.68, 125,456.40 and 61,191.84

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Solution

The fourth proportional to 91,051.68, 125,456.40 and 61,191.84 is: 84,313.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,051.68 : 125,456.40 = 61,191.84 : x
  2. Step 2: Convert to fraction form
    91,051.68/125,456.40 = 61,191.84/x
  3. Step 3: Cross multiply
    91,051.68x = 125,456.40 × 61,191.84
  4. Step 4: Simplify right side
    91,051.68x = 7,676,907,955.78
  5. Step 5: Solve for x
    x = 7,676,907,955.78/91,051.68
  6. Step 6: Final answer
    x = 84,313.74

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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.