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Finding the Fourth Proportional to 57,715.60, 86,443.80 and 57,715.60

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Solution

The fourth proportional to 57,715.60, 86,443.80 and 57,715.60 is: 86,443.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,715.60 : 86,443.80 = 57,715.60 : x
  2. Step 2: Convert to fraction form
    57,715.60/86,443.80 = 57,715.60/x
  3. Step 3: Cross multiply
    57,715.60x = 86,443.80 × 57,715.60
  4. Step 4: Simplify right side
    57,715.60x = 4,989,155,783.28
  5. Step 5: Solve for x
    x = 4,989,155,783.28/57,715.60
  6. Step 6: Final answer
    x = 86,443.80

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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.