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Finding the Fourth Proportional to 92,686.76, 139,064.94 and 42,790.76

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Solution

The fourth proportional to 92,686.76, 139,064.94 and 42,790.76 is: 64,202.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,686.76 : 139,064.94 = 42,790.76 : x
  2. Step 2: Convert to fraction form
    92,686.76/139,064.94 = 42,790.76/x
  3. Step 3: Cross multiply
    92,686.76x = 139,064.94 × 42,790.76
  4. Step 4: Simplify right side
    92,686.76x = 5,950,694,471.95
  5. Step 5: Solve for x
    x = 5,950,694,471.95/92,686.76
  6. Step 6: Final answer
    x = 64,202.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.