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Finding the Fourth Proportional to 85,924.86, 128,822.46 and 56,350.14

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Solution

The fourth proportional to 85,924.86, 128,822.46 and 56,350.14 is: 84,482.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,924.86 : 128,822.46 = 56,350.14 : x
  2. Step 2: Convert to fraction form
    85,924.86/128,822.46 = 56,350.14/x
  3. Step 3: Cross multiply
    85,924.86x = 128,822.46 × 56,350.14
  4. Step 4: Simplify right side
    85,924.86x = 7,259,163,656.14
  5. Step 5: Solve for x
    x = 7,259,163,656.14/85,924.86
  6. Step 6: Final answer
    x = 84,482.69

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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.