Home / 87,969.12-121,397.64-47,683.04

Finding the Fourth Proportional to 87,969.12, 121,397.64 and 47,683.04

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Solution

The fourth proportional to 87,969.12, 121,397.64 and 47,683.04 is: 65,802.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,969.12 : 121,397.64 = 47,683.04 : x
  2. Step 2: Convert to fraction form
    87,969.12/121,397.64 = 47,683.04/x
  3. Step 3: Cross multiply
    87,969.12x = 121,397.64 × 47,683.04
  4. Step 4: Simplify right side
    87,969.12x = 5,788,607,678.62
  5. Step 5: Solve for x
    x = 5,788,607,678.62/87,969.12
  6. Step 6: Final answer
    x = 65,802.73

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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.