Home / 78,113.34-117,175.47-31,366.23

Finding the Fourth Proportional to 78,113.34, 117,175.47 and 31,366.23

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Solution

The fourth proportional to 78,113.34, 117,175.47 and 31,366.23 is: 47,051.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,113.34 : 117,175.47 = 31,366.23 : x
  2. Step 2: Convert to fraction form
    78,113.34/117,175.47 = 31,366.23/x
  3. Step 3: Cross multiply
    78,113.34x = 117,175.47 × 31,366.23
  4. Step 4: Simplify right side
    78,113.34x = 3,675,352,742.38
  5. Step 5: Solve for x
    x = 3,675,352,742.38/78,113.34
  6. Step 6: Final answer
    x = 47,051.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.