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Finding the Fourth Proportional to 56,410.76, 84,620.39 and 18,970.94

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Solution

The fourth proportional to 56,410.76, 84,620.39 and 18,970.94 is: 28,457.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,410.76 : 84,620.39 = 18,970.94 : x
  2. Step 2: Convert to fraction form
    56,410.76/84,620.39 = 18,970.94/x
  3. Step 3: Cross multiply
    56,410.76x = 84,620.39 × 18,970.94
  4. Step 4: Simplify right side
    56,410.76x = 1,605,328,341.47
  5. Step 5: Solve for x
    x = 1,605,328,341.47/56,410.76
  6. Step 6: Final answer
    x = 28,457.84

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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.