Home / 85,690,128.90-118,208,652.57-54,717,733.38

Finding the Fourth Proportional to 85,690,128.90, 118,208,652.57 and 54,717,733.38

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Solution

The fourth proportional to 85,690,128.90, 118,208,652.57 and 54,717,733.38 is: 75,482,551.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,690,128.90 : 118,208,652.57 = 54,717,733.38 : x
  2. Step 2: Convert to fraction form
    85,690,128.90/118,208,652.57 = 54,717,733.38/x
  3. Step 3: Cross multiply
    85,690,128.90x = 118,208,652.57 × 54,717,733.38
  4. Step 4: Simplify right side
    85,690,128.90x = 6,468,109,534,534,312
  5. Step 5: Solve for x
    x = 6,468,109,534,534,312/85,690,128.90
  6. Step 6: Final answer
    x = 75,482,551.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.