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Finding the Fourth Proportional to 91,353.70, 126,068.80 and 51,069.10

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Solution

The fourth proportional to 91,353.70, 126,068.80 and 51,069.10 is: 70,475.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,353.70 : 126,068.80 = 51,069.10 : x
  2. Step 2: Convert to fraction form
    91,353.70/126,068.80 = 51,069.10/x
  3. Step 3: Cross multiply
    91,353.70x = 126,068.80 × 51,069.10
  4. Step 4: Simplify right side
    91,353.70x = 6,438,220,154.08
  5. Step 5: Solve for x
    x = 6,438,220,154.08/91,353.70
  6. Step 6: Final answer
    x = 70,475.75

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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.