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Finding the Fourth Proportional to 101,710.48, 140,358.64 and 56,388.24

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Solution

The fourth proportional to 101,710.48, 140,358.64 and 56,388.24 is: 77,814.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,710.48 : 140,358.64 = 56,388.24 : x
  2. Step 2: Convert to fraction form
    101,710.48/140,358.64 = 56,388.24/x
  3. Step 3: Cross multiply
    101,710.48x = 140,358.64 × 56,388.24
  4. Step 4: Simplify right side
    101,710.48x = 7,914,576,678.39
  5. Step 5: Solve for x
    x = 7,914,576,678.39/101,710.48
  6. Step 6: Final answer
    x = 77,814.76

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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.