Home / 83,328.81-124,994.03-20,999.31

Finding the Fourth Proportional to 83,328.81, 124,994.03 and 20,999.31

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Solution

The fourth proportional to 83,328.81, 124,994.03 and 20,999.31 is: 31,499.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,328.81 : 124,994.03 = 20,999.31 : x
  2. Step 2: Convert to fraction form
    83,328.81/124,994.03 = 20,999.31/x
  3. Step 3: Cross multiply
    83,328.81x = 124,994.03 × 20,999.31
  4. Step 4: Simplify right side
    83,328.81x = 2,624,788,279.12
  5. Step 5: Solve for x
    x = 2,624,788,279.12/83,328.81
  6. Step 6: Final answer
    x = 31,499.17

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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.