Home / 85,839.69-118,456.65-47,599.39

Finding the Fourth Proportional to 85,839.69, 118,456.65 and 47,599.39

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Solution

The fourth proportional to 85,839.69, 118,456.65 and 47,599.39 is: 65,685.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,839.69 : 118,456.65 = 47,599.39 : x
  2. Step 2: Convert to fraction form
    85,839.69/118,456.65 = 47,599.39/x
  3. Step 3: Cross multiply
    85,839.69x = 118,456.65 × 47,599.39
  4. Step 4: Simplify right side
    85,839.69x = 5,638,463,985.30
  5. Step 5: Solve for x
    x = 5,638,463,985.30/85,839.69
  6. Step 6: Final answer
    x = 65,685.98

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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.