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Finding the Fourth Proportional to 86,735.68, 119,715.28 and 56,468.32

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Solution

The fourth proportional to 86,735.68, 119,715.28 and 56,468.32 is: 77,939.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,735.68 : 119,715.28 = 56,468.32 : x
  2. Step 2: Convert to fraction form
    86,735.68/119,715.28 = 56,468.32/x
  3. Step 3: Cross multiply
    86,735.68x = 119,715.28 × 56,468.32
  4. Step 4: Simplify right side
    86,735.68x = 6,760,120,739.93
  5. Step 5: Solve for x
    x = 6,760,120,739.93/86,735.68
  6. Step 6: Final answer
    x = 77,939.33

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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.