Home / 78,690,795.71-108,588,382.52-43,409,008.89

Finding the Fourth Proportional to 78,690,795.71, 108,588,382.52 and 43,409,008.89

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Solution

The fourth proportional to 78,690,795.71, 108,588,382.52 and 43,409,008.89 is: 59,901,720.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,690,795.71 : 108,588,382.52 = 43,409,008.89 : x
  2. Step 2: Convert to fraction form
    78,690,795.71/108,588,382.52 = 43,409,008.89/x
  3. Step 3: Cross multiply
    78,690,795.71x = 108,588,382.52 × 43,409,008.89
  4. Step 4: Simplify right side
    78,690,795.71x = 4,713,714,061,944,356
  5. Step 5: Solve for x
    x = 4,713,714,061,944,356/78,690,795.71
  6. Step 6: Final answer
    x = 59,901,720.65

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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.