Home / 85,961.12-128,941.50-48,504.18

Finding the Fourth Proportional to 85,961.12, 128,941.50 and 48,504.18

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Solution

The fourth proportional to 85,961.12, 128,941.50 and 48,504.18 is: 72,756.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,961.12 : 128,941.50 = 48,504.18 : x
  2. Step 2: Convert to fraction form
    85,961.12/128,941.50 = 48,504.18/x
  3. Step 3: Cross multiply
    85,961.12x = 128,941.50 × 48,504.18
  4. Step 4: Simplify right side
    85,961.12x = 6,254,201,725.47
  5. Step 5: Solve for x
    x = 6,254,201,725.47/85,961.12
  6. Step 6: Final answer
    x = 72,756.17

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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.