Home / 91,898.36-126,867.90-61,841.72

Finding the Fourth Proportional to 91,898.36, 126,867.90 and 61,841.72

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Solution

The fourth proportional to 91,898.36, 126,867.90 and 61,841.72 is: 85,373.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,898.36 : 126,867.90 = 61,841.72 : x
  2. Step 2: Convert to fraction form
    91,898.36/126,867.90 = 61,841.72/x
  3. Step 3: Cross multiply
    91,898.36x = 126,867.90 × 61,841.72
  4. Step 4: Simplify right side
    91,898.36x = 7,845,729,148.79
  5. Step 5: Solve for x
    x = 7,845,729,148.79/91,898.36
  6. Step 6: Final answer
    x = 85,373.98

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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.