Home / 91,412.60-126,148.73-53,172.90

Finding the Fourth Proportional to 91,412.60, 126,148.73 and 53,172.90

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Solution

The fourth proportional to 91,412.60, 126,148.73 and 53,172.90 is: 73,378.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,412.60 : 126,148.73 = 53,172.90 : x
  2. Step 2: Convert to fraction form
    91,412.60/126,148.73 = 53,172.90/x
  3. Step 3: Cross multiply
    91,412.60x = 126,148.73 × 53,172.90
  4. Step 4: Simplify right side
    91,412.60x = 6,707,693,539.55
  5. Step 5: Solve for x
    x = 6,707,693,539.55/91,412.60
  6. Step 6: Final answer
    x = 73,378.22

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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.