Home / 85,909.07-128,832.71-29,733.90

Finding the Fourth Proportional to 85,909.07, 128,832.71 and 29,733.90

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Solution

The fourth proportional to 85,909.07, 128,832.71 and 29,733.90 is: 44,590.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,909.07 : 128,832.71 = 29,733.90 : x
  2. Step 2: Convert to fraction form
    85,909.07/128,832.71 = 29,733.90/x
  3. Step 3: Cross multiply
    85,909.07x = 128,832.71 × 29,733.90
  4. Step 4: Simplify right side
    85,909.07x = 3,830,698,767.20
  5. Step 5: Solve for x
    x = 3,830,698,767.20/85,909.07
  6. Step 6: Final answer
    x = 44,590.16

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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.