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Finding the Fourth Proportional to 77,860.75, 107,447.82 and 42,050.76

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Solution

The fourth proportional to 77,860.75, 107,447.82 and 42,050.76 is: 58,030.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,860.75 : 107,447.82 = 42,050.76 : x
  2. Step 2: Convert to fraction form
    77,860.75/107,447.82 = 42,050.76/x
  3. Step 3: Cross multiply
    77,860.75x = 107,447.82 × 42,050.76
  4. Step 4: Simplify right side
    77,860.75x = 4,518,262,491.34
  5. Step 5: Solve for x
    x = 4,518,262,491.34/77,860.75
  6. Step 6: Final answer
    x = 58,030.04

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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.