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Finding the Fourth Proportional to 61,388.80, 84,715.14 and 37,515.40

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Solution

The fourth proportional to 61,388.80, 84,715.14 and 37,515.40 is: 51,770.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,388.80 : 84,715.14 = 37,515.40 : x
  2. Step 2: Convert to fraction form
    61,388.80/84,715.14 = 37,515.40/x
  3. Step 3: Cross multiply
    61,388.80x = 84,715.14 × 37,515.40
  4. Step 4: Simplify right side
    61,388.80x = 3,178,122,363.16
  5. Step 5: Solve for x
    x = 3,178,122,363.16/61,388.80
  6. Step 6: Final answer
    x = 51,770.39

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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.