Home / 91,830.72-126,711.36-54,099.84

Finding the Fourth Proportional to 91,830.72, 126,711.36 and 54,099.84

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Solution

The fourth proportional to 91,830.72, 126,711.36 and 54,099.84 is: 74,648.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,830.72 : 126,711.36 = 54,099.84 : x
  2. Step 2: Convert to fraction form
    91,830.72/126,711.36 = 54,099.84/x
  3. Step 3: Cross multiply
    91,830.72x = 126,711.36 × 54,099.84
  4. Step 4: Simplify right side
    91,830.72x = 6,855,064,302.18
  5. Step 5: Solve for x
    x = 6,855,064,302.18/91,830.72
  6. Step 6: Final answer
    x = 74,648.92

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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.