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Finding the Fourth Proportional to 91,955.34, 126,897 and 51,117.90

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Solution

The fourth proportional to 91,955.34, 126,897 and 51,117.90 is: 70,541.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,955.34 : 126,897 = 51,117.90 : x
  2. Step 2: Convert to fraction form
    91,955.34/126,897 = 51,117.90/x
  3. Step 3: Cross multiply
    91,955.34x = 126,897 × 51,117.90
  4. Step 4: Simplify right side
    91,955.34x = 6,486,708,156.30
  5. Step 5: Solve for x
    x = 6,486,708,156.30/91,955.34
  6. Step 6: Final answer
    x = 70,541.94

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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.