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Finding the Fourth Proportional to 58,261.60, 87,327.60 and 31,985.20

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Solution

The fourth proportional to 58,261.60, 87,327.60 and 31,985.20 is: 47,942.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,261.60 : 87,327.60 = 31,985.20 : x
  2. Step 2: Convert to fraction form
    58,261.60/87,327.60 = 31,985.20/x
  3. Step 3: Cross multiply
    58,261.60x = 87,327.60 × 31,985.20
  4. Step 4: Simplify right side
    58,261.60x = 2,793,190,751.52
  5. Step 5: Solve for x
    x = 2,793,190,751.52/58,261.60
  6. Step 6: Final answer
    x = 47,942.23

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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.