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Finding the Fourth Proportional to 52,476.70, 78,715.05 and 21,334.30

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Solution

The fourth proportional to 52,476.70, 78,715.05 and 21,334.30 is: 32,001.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,476.70 : 78,715.05 = 21,334.30 : x
  2. Step 2: Convert to fraction form
    52,476.70/78,715.05 = 21,334.30/x
  3. Step 3: Cross multiply
    52,476.70x = 78,715.05 × 21,334.30
  4. Step 4: Simplify right side
    52,476.70x = 1,679,330,491.22
  5. Step 5: Solve for x
    x = 1,679,330,491.22/52,476.70
  6. Step 6: Final answer
    x = 32,001.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.