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Finding the Fourth Proportional to 60,637.72, 90,788.64 and 30,991.72

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Solution

The fourth proportional to 60,637.72, 90,788.64 and 30,991.72 is: 46,401.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,637.72 : 90,788.64 = 30,991.72 : x
  2. Step 2: Convert to fraction form
    60,637.72/90,788.64 = 30,991.72/x
  3. Step 3: Cross multiply
    60,637.72x = 90,788.64 × 30,991.72
  4. Step 4: Simplify right side
    60,637.72x = 2,813,696,110.06
  5. Step 5: Solve for x
    x = 2,813,696,110.06/60,637.72
  6. Step 6: Final answer
    x = 46,401.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.