Home / 85,423.90-128,135.54-23,094.40

Finding the Fourth Proportional to 85,423.90, 128,135.54 and 23,094.40

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Solution

The fourth proportional to 85,423.90, 128,135.54 and 23,094.40 is: 34,641.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,423.90 : 128,135.54 = 23,094.40 : x
  2. Step 2: Convert to fraction form
    85,423.90/128,135.54 = 23,094.40/x
  3. Step 3: Cross multiply
    85,423.90x = 128,135.54 × 23,094.40
  4. Step 4: Simplify right side
    85,423.90x = 2,959,213,414.98
  5. Step 5: Solve for x
    x = 2,959,213,414.98/85,423.90
  6. Step 6: Final answer
    x = 34,641.52

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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.