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Finding the Fourth Proportional to 85,468.16, 128,204.16 and 29,307.68

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Solution

The fourth proportional to 85,468.16, 128,204.16 and 29,307.68 is: 43,962.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,468.16 : 128,204.16 = 29,307.68 : x
  2. Step 2: Convert to fraction form
    85,468.16/128,204.16 = 29,307.68/x
  3. Step 3: Cross multiply
    85,468.16x = 128,204.16 × 29,307.68
  4. Step 4: Simplify right side
    85,468.16x = 3,757,366,495.95
  5. Step 5: Solve for x
    x = 3,757,366,495.95/85,468.16
  6. Step 6: Final answer
    x = 43,962.18

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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.