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Finding the Fourth Proportional to 85,587.84, 128,355.84 and 23,250.24

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Solution

The fourth proportional to 85,587.84, 128,355.84 and 23,250.24 is: 34,868.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,587.84 : 128,355.84 = 23,250.24 : x
  2. Step 2: Convert to fraction form
    85,587.84/128,355.84 = 23,250.24/x
  3. Step 3: Cross multiply
    85,587.84x = 128,355.84 × 23,250.24
  4. Step 4: Simplify right side
    85,587.84x = 2,984,304,085.40
  5. Step 5: Solve for x
    x = 2,984,304,085.40/85,587.84
  6. Step 6: Final answer
    x = 34,868.32

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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.