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Finding the Fourth Proportional to 101,765.70, 140,445.08 and 56,458.28

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Solution

The fourth proportional to 101,765.70, 140,445.08 and 56,458.28 is: 77,917.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,765.70 : 140,445.08 = 56,458.28 : x
  2. Step 2: Convert to fraction form
    101,765.70/140,445.08 = 56,458.28/x
  3. Step 3: Cross multiply
    101,765.70x = 140,445.08 × 56,458.28
  4. Step 4: Simplify right side
    101,765.70x = 7,929,286,666.75
  5. Step 5: Solve for x
    x = 7,929,286,666.75/101,765.70
  6. Step 6: Final answer
    x = 77,917.08

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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.