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Finding the Fourth Proportional to 84,008.93, 115,894.67 and 56,776.32

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Solution

The fourth proportional to 84,008.93, 115,894.67 and 56,776.32 is: 78,325.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,008.93 : 115,894.67 = 56,776.32 : x
  2. Step 2: Convert to fraction form
    84,008.93/115,894.67 = 56,776.32/x
  3. Step 3: Cross multiply
    84,008.93x = 115,894.67 × 56,776.32
  4. Step 4: Simplify right side
    84,008.93x = 6,580,072,586.33
  5. Step 5: Solve for x
    x = 6,580,072,586.33/84,008.93
  6. Step 6: Final answer
    x = 78,325.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.