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Finding the Fourth Proportional to 101,798.88, 140,475.80 and 56,476.76

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Solution

The fourth proportional to 101,798.88, 140,475.80 and 56,476.76 is: 77,934.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,798.88 : 140,475.80 = 56,476.76 : x
  2. Step 2: Convert to fraction form
    101,798.88/140,475.80 = 56,476.76/x
  3. Step 3: Cross multiply
    101,798.88x = 140,475.80 × 56,476.76
  4. Step 4: Simplify right side
    101,798.88x = 7,933,618,042.41
  5. Step 5: Solve for x
    x = 7,933,618,042.41/101,798.88
  6. Step 6: Final answer
    x = 77,934.24

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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.