Home / 85,543.10-128,314.65-23,213.60

Finding the Fourth Proportional to 85,543.10, 128,314.65 and 23,213.60

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Solution

The fourth proportional to 85,543.10, 128,314.65 and 23,213.60 is: 34,820.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,543.10 : 128,314.65 = 23,213.60 : x
  2. Step 2: Convert to fraction form
    85,543.10/128,314.65 = 23,213.60/x
  3. Step 3: Cross multiply
    85,543.10x = 128,314.65 × 23,213.60
  4. Step 4: Simplify right side
    85,543.10x = 2,978,644,959.24
  5. Step 5: Solve for x
    x = 2,978,644,959.24/85,543.10
  6. Step 6: Final answer
    x = 34,820.40

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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.