Home / 91,632.15-126,405.63-57,148.56

Finding the Fourth Proportional to 91,632.15, 126,405.63 and 57,148.56

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Solution

The fourth proportional to 91,632.15, 126,405.63 and 57,148.56 is: 78,835.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,632.15 : 126,405.63 = 57,148.56 : x
  2. Step 2: Convert to fraction form
    91,632.15/126,405.63 = 57,148.56/x
  3. Step 3: Cross multiply
    91,632.15x = 126,405.63 × 57,148.56
  4. Step 4: Simplify right side
    91,632.15x = 7,223,899,730.39
  5. Step 5: Solve for x
    x = 7,223,899,730.39/91,632.15
  6. Step 6: Final answer
    x = 78,835.86

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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.