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Finding the Fourth Proportional to 87,430.60, 131,210.70 and 57,838.60

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Solution

The fourth proportional to 87,430.60, 131,210.70 and 57,838.60 is: 86,800.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,430.60 : 131,210.70 = 57,838.60 : x
  2. Step 2: Convert to fraction form
    87,430.60/131,210.70 = 57,838.60/x
  3. Step 3: Cross multiply
    87,430.60x = 131,210.70 × 57,838.60
  4. Step 4: Simplify right side
    87,430.60x = 7,589,043,193.02
  5. Step 5: Solve for x
    x = 7,589,043,193.02/87,430.60
  6. Step 6: Final answer
    x = 86,800.77

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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.