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Finding the Fourth Proportional to 101,799.71, 140,484.45 and 56,480.67

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Solution

The fourth proportional to 101,799.71, 140,484.45 and 56,480.67 is: 77,943.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,799.71 : 140,484.45 = 56,480.67 : x
  2. Step 2: Convert to fraction form
    101,799.71/140,484.45 = 56,480.67/x
  3. Step 3: Cross multiply
    101,799.71x = 140,484.45 × 56,480.67
  4. Step 4: Simplify right side
    101,799.71x = 7,934,655,860.58
  5. Step 5: Solve for x
    x = 7,934,655,860.58/101,799.71
  6. Step 6: Final answer
    x = 77,943.79

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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.