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Finding the Fourth Proportional to 58,231.60, 87,347.40 and 31,987.60

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Solution

The fourth proportional to 58,231.60, 87,347.40 and 31,987.60 is: 47,981.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,231.60 : 87,347.40 = 31,987.60 : x
  2. Step 2: Convert to fraction form
    58,231.60/87,347.40 = 31,987.60/x
  3. Step 3: Cross multiply
    58,231.60x = 87,347.40 × 31,987.60
  4. Step 4: Simplify right side
    58,231.60x = 2,794,033,692.24
  5. Step 5: Solve for x
    x = 2,794,033,692.24/58,231.60
  6. Step 6: Final answer
    x = 47,981.40

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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.