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Finding the Fourth Proportional to 63,009.80, 86,955.09 and 38,801.60

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Solution

The fourth proportional to 63,009.80, 86,955.09 and 38,801.60 is: 53,547.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,009.80 : 86,955.09 = 38,801.60 : x
  2. Step 2: Convert to fraction form
    63,009.80/86,955.09 = 38,801.60/x
  3. Step 3: Cross multiply
    63,009.80x = 86,955.09 × 38,801.60
  4. Step 4: Simplify right side
    63,009.80x = 3,373,996,620.14
  5. Step 5: Solve for x
    x = 3,373,996,620.14/63,009.80
  6. Step 6: Final answer
    x = 53,547.17

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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.