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Finding the Fourth Proportional to 35,501.61, 48,994.61 and 20,399.16

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Solution

The fourth proportional to 35,501.61, 48,994.61 and 20,399.16 is: 28,152.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,501.61 : 48,994.61 = 20,399.16 : x
  2. Step 2: Convert to fraction form
    35,501.61/48,994.61 = 20,399.16/x
  3. Step 3: Cross multiply
    35,501.61x = 48,994.61 × 20,399.16
  4. Step 4: Simplify right side
    35,501.61x = 999,448,888.53
  5. Step 5: Solve for x
    x = 999,448,888.53/35,501.61
  6. Step 6: Final answer
    x = 28,152.21

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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.