Home / 71,534,511.54-98,720,007.78-40,178,077.80

Finding the Fourth Proportional to 71,534,511.54, 98,720,007.78 and 40,178,077.80

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Solution

The fourth proportional to 71,534,511.54, 98,720,007.78 and 40,178,077.80 is: 55,447,085.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,534,511.54 : 98,720,007.78 = 40,178,077.80 : x
  2. Step 2: Convert to fraction form
    71,534,511.54/98,720,007.78 = 40,178,077.80/x
  3. Step 3: Cross multiply
    71,534,511.54x = 98,720,007.78 × 40,178,077.80
  4. Step 4: Simplify right side
    71,534,511.54x = 3,966,380,153,001,445
  5. Step 5: Solve for x
    x = 3,966,380,153,001,445/71,534,511.54
  6. Step 6: Final answer
    x = 55,447,085.16

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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.