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Finding the Fourth Proportional to 101,758.84, 140,434.28 and 56,440.96

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Solution

The fourth proportional to 101,758.84, 140,434.28 and 56,440.96 is: 77,892.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,758.84 : 140,434.28 = 56,440.96 : x
  2. Step 2: Convert to fraction form
    101,758.84/140,434.28 = 56,440.96/x
  3. Step 3: Cross multiply
    101,758.84x = 140,434.28 × 56,440.96
  4. Step 4: Simplify right side
    101,758.84x = 7,926,245,580.11
  5. Step 5: Solve for x
    x = 7,926,245,580.11/101,758.84
  6. Step 6: Final answer
    x = 77,892.45

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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.