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Finding the Fourth Proportional to 63,681.54, 87,881.04 and 39,822.05

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Solution

The fourth proportional to 63,681.54, 87,881.04 and 39,822.05 is: 54,954.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,681.54 : 87,881.04 = 39,822.05 : x
  2. Step 2: Convert to fraction form
    63,681.54/87,881.04 = 39,822.05/x
  3. Step 3: Cross multiply
    63,681.54x = 87,881.04 × 39,822.05
  4. Step 4: Simplify right side
    63,681.54x = 3,499,602,729.53
  5. Step 5: Solve for x
    x = 3,499,602,729.53/63,681.54
  6. Step 6: Final answer
    x = 54,954.74

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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.