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Finding the Fourth Proportional to 85,365.60, 128,048.40 and 58,793.55

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Solution

The fourth proportional to 85,365.60, 128,048.40 and 58,793.55 is: 88,190.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,365.60 : 128,048.40 = 58,793.55 : x
  2. Step 2: Convert to fraction form
    85,365.60/128,048.40 = 58,793.55/x
  3. Step 3: Cross multiply
    85,365.60x = 128,048.40 × 58,793.55
  4. Step 4: Simplify right side
    85,365.60x = 7,528,420,007.82
  5. Step 5: Solve for x
    x = 7,528,420,007.82/85,365.60
  6. Step 6: Final answer
    x = 88,190.33

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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.