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Finding the Fourth Proportional to 56,710.80, 85,066.20 and 19,313.10

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Solution

The fourth proportional to 56,710.80, 85,066.20 and 19,313.10 is: 28,969.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,710.80 : 85,066.20 = 19,313.10 : x
  2. Step 2: Convert to fraction form
    56,710.80/85,066.20 = 19,313.10/x
  3. Step 3: Cross multiply
    56,710.80x = 85,066.20 × 19,313.10
  4. Step 4: Simplify right side
    56,710.80x = 1,642,892,027.22
  5. Step 5: Solve for x
    x = 1,642,892,027.22/56,710.80
  6. Step 6: Final answer
    x = 28,969.65

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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.