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Finding the Fourth Proportional to 81,564.93, 112,599.17 and 54,697.63

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Solution

The fourth proportional to 81,564.93, 112,599.17 and 54,697.63 is: 75,509.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,564.93 : 112,599.17 = 54,697.63 : x
  2. Step 2: Convert to fraction form
    81,564.93/112,599.17 = 54,697.63/x
  3. Step 3: Cross multiply
    81,564.93x = 112,599.17 × 54,697.63
  4. Step 4: Simplify right side
    81,564.93x = 6,158,907,465.48
  5. Step 5: Solve for x
    x = 6,158,907,465.48/81,564.93
  6. Step 6: Final answer
    x = 75,509.26

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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.