Home / 91,628.40-126,508.80-57,225.48

Finding the Fourth Proportional to 91,628.40, 126,508.80 and 57,225.48

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Solution

The fourth proportional to 91,628.40, 126,508.80 and 57,225.48 is: 79,009.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,628.40 : 126,508.80 = 57,225.48 : x
  2. Step 2: Convert to fraction form
    91,628.40/126,508.80 = 57,225.48/x
  3. Step 3: Cross multiply
    91,628.40x = 126,508.80 × 57,225.48
  4. Step 4: Simplify right side
    91,628.40x = 7,239,526,804.22
  5. Step 5: Solve for x
    x = 7,239,526,804.22/91,628.40
  6. Step 6: Final answer
    x = 79,009.64

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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.