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Finding the Fourth Proportional to 63,637.80, 87,780.90 and 40,969.32

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Solution

The fourth proportional to 63,637.80, 87,780.90 and 40,969.32 is: 56,512.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,637.80 : 87,780.90 = 40,969.32 : x
  2. Step 2: Convert to fraction form
    63,637.80/87,780.90 = 40,969.32/x
  3. Step 3: Cross multiply
    63,637.80x = 87,780.90 × 40,969.32
  4. Step 4: Simplify right side
    63,637.80x = 3,596,323,781.99
  5. Step 5: Solve for x
    x = 3,596,323,781.99/63,637.80
  6. Step 6: Final answer
    x = 56,512.38

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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.