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Finding the Fourth Proportional to 56,752.50, 85,134.90 and 21,230.76

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Solution

The fourth proportional to 56,752.50, 85,134.90 and 21,230.76 is: 31,848.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,752.50 : 85,134.90 = 21,230.76 : x
  2. Step 2: Convert to fraction form
    56,752.50/85,134.90 = 21,230.76/x
  3. Step 3: Cross multiply
    56,752.50x = 85,134.90 × 21,230.76
  4. Step 4: Simplify right side
    56,752.50x = 1,807,478,430.09
  5. Step 5: Solve for x
    x = 1,807,478,430.09/56,752.50
  6. Step 6: Final answer
    x = 31,848.44

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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.