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Finding the Fourth Proportional to 61,499.87, 92,188.15 and 21,487.80

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Solution

The fourth proportional to 61,499.87, 92,188.15 and 21,487.80 is: 32,210.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,499.87 : 92,188.15 = 21,487.80 : x
  2. Step 2: Convert to fraction form
    61,499.87/92,188.15 = 21,487.80/x
  3. Step 3: Cross multiply
    61,499.87x = 92,188.15 × 21,487.80
  4. Step 4: Simplify right side
    61,499.87x = 1,980,920,475.85
  5. Step 5: Solve for x
    x = 1,980,920,475.85/61,499.87
  6. Step 6: Final answer
    x = 32,210.16

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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.