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Finding the Fourth Proportional to 66,293.65, 91,475.08 and 39,435.67

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Solution

The fourth proportional to 66,293.65, 91,475.08 and 39,435.67 is: 54,415.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,293.65 : 91,475.08 = 39,435.67 : x
  2. Step 2: Convert to fraction form
    66,293.65/91,475.08 = 39,435.67/x
  3. Step 3: Cross multiply
    66,293.65x = 91,475.08 × 39,435.67
  4. Step 4: Simplify right side
    66,293.65x = 3,607,381,068.10
  5. Step 5: Solve for x
    x = 3,607,381,068.10/66,293.65
  6. Step 6: Final answer
    x = 54,415.18

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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.