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Finding the Fourth Proportional to 56,999.80, 85,499.72 and 14,879.76

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Solution

The fourth proportional to 56,999.80, 85,499.72 and 14,879.76 is: 22,319.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,999.80 : 85,499.72 = 14,879.76 : x
  2. Step 2: Convert to fraction form
    56,999.80/85,499.72 = 14,879.76/x
  3. Step 3: Cross multiply
    56,999.80x = 85,499.72 × 14,879.76
  4. Step 4: Simplify right side
    56,999.80x = 1,272,215,313.67
  5. Step 5: Solve for x
    x = 1,272,215,313.67/56,999.80
  6. Step 6: Final answer
    x = 22,319.65

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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.