Home / 91,938.40-126,870.24-51,653.88

Finding the Fourth Proportional to 91,938.40, 126,870.24 and 51,653.88

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Solution

The fourth proportional to 91,938.40, 126,870.24 and 51,653.88 is: 71,279.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,938.40 : 126,870.24 = 51,653.88 : x
  2. Step 2: Convert to fraction form
    91,938.40/126,870.24 = 51,653.88/x
  3. Step 3: Cross multiply
    91,938.40x = 126,870.24 × 51,653.88
  4. Step 4: Simplify right side
    91,938.40x = 6,553,340,152.53
  5. Step 5: Solve for x
    x = 6,553,340,152.53/91,938.40
  6. Step 6: Final answer
    x = 71,279.68

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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.