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Finding the Fourth Proportional to 45,783.90, 63,189.45 and 27,885.87

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Solution

The fourth proportional to 45,783.90, 63,189.45 and 27,885.87 is: 38,487.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,783.90 : 63,189.45 = 27,885.87 : x
  2. Step 2: Convert to fraction form
    45,783.90/63,189.45 = 27,885.87/x
  3. Step 3: Cross multiply
    45,783.90x = 63,189.45 × 27,885.87
  4. Step 4: Simplify right side
    45,783.90x = 1,762,092,788.07
  5. Step 5: Solve for x
    x = 1,762,092,788.07/45,783.90
  6. Step 6: Final answer
    x = 38,487.17

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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.