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Finding the Fourth Proportional to 62,685.60, 86,505.84 and 34,390.68

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Solution

The fourth proportional to 62,685.60, 86,505.84 and 34,390.68 is: 47,458.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,685.60 : 86,505.84 = 34,390.68 : x
  2. Step 2: Convert to fraction form
    62,685.60/86,505.84 = 34,390.68/x
  3. Step 3: Cross multiply
    62,685.60x = 86,505.84 × 34,390.68
  4. Step 4: Simplify right side
    62,685.60x = 2,974,994,661.57
  5. Step 5: Solve for x
    x = 2,974,994,661.57/62,685.60
  6. Step 6: Final answer
    x = 47,458.98

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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.