Home / 91,318.19-126,018.73-51,031.94

Finding the Fourth Proportional to 91,318.19, 126,018.73 and 51,031.94

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Solution

The fourth proportional to 91,318.19, 126,018.73 and 51,031.94 is: 70,423.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,318.19 : 126,018.73 = 51,031.94 : x
  2. Step 2: Convert to fraction form
    91,318.19/126,018.73 = 51,031.94/x
  3. Step 3: Cross multiply
    91,318.19x = 126,018.73 × 51,031.94
  4. Step 4: Simplify right side
    91,318.19x = 6,430,979,510.56
  5. Step 5: Solve for x
    x = 6,430,979,510.56/91,318.19
  6. Step 6: Final answer
    x = 70,423.86

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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.