Home / 85,905.32-128,827.08-29,730.17

Finding the Fourth Proportional to 85,905.32, 128,827.08 and 29,730.17

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Solution

The fourth proportional to 85,905.32, 128,827.08 and 29,730.17 is: 44,584.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,905.32 : 128,827.08 = 29,730.17 : x
  2. Step 2: Convert to fraction form
    85,905.32/128,827.08 = 29,730.17/x
  3. Step 3: Cross multiply
    85,905.32x = 128,827.08 × 29,730.17
  4. Step 4: Simplify right side
    85,905.32x = 3,830,051,311.07
  5. Step 5: Solve for x
    x = 3,830,051,311.07/85,905.32
  6. Step 6: Final answer
    x = 44,584.57

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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.