Home / 85,612.02-128,330.55-29,435.28

Finding the Fourth Proportional to 85,612.02, 128,330.55 and 29,435.28

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Solution

The fourth proportional to 85,612.02, 128,330.55 and 29,435.28 is: 44,122.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,612.02 : 128,330.55 = 29,435.28 : x
  2. Step 2: Convert to fraction form
    85,612.02/128,330.55 = 29,435.28/x
  3. Step 3: Cross multiply
    85,612.02x = 128,330.55 × 29,435.28
  4. Step 4: Simplify right side
    85,612.02x = 3,777,445,671.80
  5. Step 5: Solve for x
    x = 3,777,445,671.80/85,612.02
  6. Step 6: Final answer
    x = 44,122.84

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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.