Home / 91,378.28-126,102.90-53,653.16

Finding the Fourth Proportional to 91,378.28, 126,102.90 and 53,653.16

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Solution

The fourth proportional to 91,378.28, 126,102.90 and 53,653.16 is: 74,041.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,378.28 : 126,102.90 = 53,653.16 : x
  2. Step 2: Convert to fraction form
    91,378.28/126,102.90 = 53,653.16/x
  3. Step 3: Cross multiply
    91,378.28x = 126,102.90 × 53,653.16
  4. Step 4: Simplify right side
    91,378.28x = 6,765,819,070.16
  5. Step 5: Solve for x
    x = 6,765,819,070.16/91,378.28
  6. Step 6: Final answer
    x = 74,041.87

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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.