Home / 66,440.13-91,688.10-36,225.21

Finding the Fourth Proportional to 66,440.13, 91,688.10 and 36,225.21

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Solution

The fourth proportional to 66,440.13, 91,688.10 and 36,225.21 is: 49,991.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,440.13 : 91,688.10 = 36,225.21 : x
  2. Step 2: Convert to fraction form
    66,440.13/91,688.10 = 36,225.21/x
  3. Step 3: Cross multiply
    66,440.13x = 91,688.10 × 36,225.21
  4. Step 4: Simplify right side
    66,440.13x = 3,321,420,677.00
  5. Step 5: Solve for x
    x = 3,321,420,677.00/66,440.13
  6. Step 6: Final answer
    x = 49,991.18

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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.