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Finding the Fourth Proportional to 101,671.52, 140,316.50 and 56,359.32

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Solution

The fourth proportional to 101,671.52, 140,316.50 and 56,359.32 is: 77,781.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,671.52 : 140,316.50 = 56,359.32 : x
  2. Step 2: Convert to fraction form
    101,671.52/140,316.50 = 56,359.32/x
  3. Step 3: Cross multiply
    101,671.52x = 140,316.50 × 56,359.32
  4. Step 4: Simplify right side
    101,671.52x = 7,908,142,524.78
  5. Step 5: Solve for x
    x = 7,908,142,524.78/101,671.52
  6. Step 6: Final answer
    x = 77,781.30

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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.