Home / 80,128,991.42-119,519,792.31-72,772,934.56

Finding the Fourth Proportional to 80,128,991.42, 119,519,792.31 and 72,772,934.56

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Solution

The fourth proportional to 80,128,991.42, 119,519,792.31 and 72,772,934.56 is: 108,547,554.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,128,991.42 : 119,519,792.31 = 72,772,934.56 : x
  2. Step 2: Convert to fraction form
    80,128,991.42/119,519,792.31 = 72,772,934.56/x
  3. Step 3: Cross multiply
    80,128,991.42x = 119,519,792.31 × 72,772,934.56
  4. Step 4: Simplify right side
    80,128,991.42x = 8,697,806,024,699,221
  5. Step 5: Solve for x
    x = 8,697,806,024,699,221/80,128,991.42
  6. Step 6: Final answer
    x = 108,547,554.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.