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Finding the Fourth Proportional to 69,988.71, 96,585.88 and 39,362.40

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Solution

The fourth proportional to 69,988.71, 96,585.88 and 39,362.40 is: 54,320.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,988.71 : 96,585.88 = 39,362.40 : x
  2. Step 2: Convert to fraction form
    69,988.71/96,585.88 = 39,362.40/x
  3. Step 3: Cross multiply
    69,988.71x = 96,585.88 × 39,362.40
  4. Step 4: Simplify right side
    69,988.71x = 3,801,852,042.91
  5. Step 5: Solve for x
    x = 3,801,852,042.91/69,988.71
  6. Step 6: Final answer
    x = 54,320.93

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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.