Home / 85,623.84-128,436.12-23,294.28

Finding the Fourth Proportional to 85,623.84, 128,436.12 and 23,294.28

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Solution

The fourth proportional to 85,623.84, 128,436.12 and 23,294.28 is: 34,941.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,623.84 : 128,436.12 = 23,294.28 : x
  2. Step 2: Convert to fraction form
    85,623.84/128,436.12 = 23,294.28/x
  3. Step 3: Cross multiply
    85,623.84x = 128,436.12 × 23,294.28
  4. Step 4: Simplify right side
    85,623.84x = 2,991,826,941.39
  5. Step 5: Solve for x
    x = 2,991,826,941.39/85,623.84
  6. Step 6: Final answer
    x = 34,941.52

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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.