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Finding the Fourth Proportional to 58,086.80, 87,130.20 and 56,920.40

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Solution

The fourth proportional to 58,086.80, 87,130.20 and 56,920.40 is: 85,380.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,086.80 : 87,130.20 = 56,920.40 : x
  2. Step 2: Convert to fraction form
    58,086.80/87,130.20 = 56,920.40/x
  3. Step 3: Cross multiply
    58,086.80x = 87,130.20 × 56,920.40
  4. Step 4: Simplify right side
    58,086.80x = 4,959,485,836.08
  5. Step 5: Solve for x
    x = 4,959,485,836.08/58,086.80
  6. Step 6: Final answer
    x = 85,380.60

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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.