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Finding the Fourth Proportional to 91,304.88, 126,000.90 and 51,018.72

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Solution

The fourth proportional to 91,304.88, 126,000.90 and 51,018.72 is: 70,405.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,304.88 : 126,000.90 = 51,018.72 : x
  2. Step 2: Convert to fraction form
    91,304.88/126,000.90 = 51,018.72/x
  3. Step 3: Cross multiply
    91,304.88x = 126,000.90 × 51,018.72
  4. Step 4: Simplify right side
    91,304.88x = 6,428,404,636.85
  5. Step 5: Solve for x
    x = 6,428,404,636.85/91,304.88
  6. Step 6: Final answer
    x = 70,405.93

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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.