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Finding the Fourth Proportional to 66,510.24, 91,795.84 and 39,654.40

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Solution

The fourth proportional to 66,510.24, 91,795.84 and 39,654.40 is: 54,730.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,510.24 : 91,795.84 = 39,654.40 : x
  2. Step 2: Convert to fraction form
    66,510.24/91,795.84 = 39,654.40/x
  3. Step 3: Cross multiply
    66,510.24x = 91,795.84 × 39,654.40
  4. Step 4: Simplify right side
    66,510.24x = 3,640,108,957.70
  5. Step 5: Solve for x
    x = 3,640,108,957.70/66,510.24
  6. Step 6: Final answer
    x = 54,730.05

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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.