Home / 71,531.84-98,712.06-39,699.92

Finding the Fourth Proportional to 71,531.84, 98,712.06 and 39,699.92

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Solution

The fourth proportional to 71,531.84, 98,712.06 and 39,699.92 is: 54,784.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,531.84 : 98,712.06 = 39,699.92 : x
  2. Step 2: Convert to fraction form
    71,531.84/98,712.06 = 39,699.92/x
  3. Step 3: Cross multiply
    71,531.84x = 98,712.06 × 39,699.92
  4. Step 4: Simplify right side
    71,531.84x = 3,918,860,885.04
  5. Step 5: Solve for x
    x = 3,918,860,885.04/71,531.84
  6. Step 6: Final answer
    x = 54,784.85

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1.5x scale

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.