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Finding the Fourth Proportional to 60,686.82, 90,796.95 and 36,990.07

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Solution

The fourth proportional to 60,686.82, 90,796.95 and 36,990.07 is: 55,342.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,686.82 : 90,796.95 = 36,990.07 : x
  2. Step 2: Convert to fraction form
    60,686.82/90,796.95 = 36,990.07/x
  3. Step 3: Cross multiply
    60,686.82x = 90,796.95 × 36,990.07
  4. Step 4: Simplify right side
    60,686.82x = 3,358,585,309.29
  5. Step 5: Solve for x
    x = 3,358,585,309.29/60,686.82
  6. Step 6: Final answer
    x = 55,342.91

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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.