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Finding the Fourth Proportional to 91,670.35, 126,510.92 and 51,384.12

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Solution

The fourth proportional to 91,670.35, 126,510.92 and 51,384.12 is: 70,913.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,670.35 : 126,510.92 = 51,384.12 : x
  2. Step 2: Convert to fraction form
    91,670.35/126,510.92 = 51,384.12/x
  3. Step 3: Cross multiply
    91,670.35x = 126,510.92 × 51,384.12
  4. Step 4: Simplify right side
    91,670.35x = 6,500,651,662.04
  5. Step 5: Solve for x
    x = 6,500,651,662.04/91,670.35
  6. Step 6: Final answer
    x = 70,913.35

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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.