Home / 78,708.32-118,065.36-31,960.16

Finding the Fourth Proportional to 78,708.32, 118,065.36 and 31,960.16

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Solution

The fourth proportional to 78,708.32, 118,065.36 and 31,960.16 is: 47,941.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,708.32 : 118,065.36 = 31,960.16 : x
  2. Step 2: Convert to fraction form
    78,708.32/118,065.36 = 31,960.16/x
  3. Step 3: Cross multiply
    78,708.32x = 118,065.36 × 31,960.16
  4. Step 4: Simplify right side
    78,708.32x = 3,773,387,796.06
  5. Step 5: Solve for x
    x = 3,773,387,796.06/78,708.32
  6. Step 6: Final answer
    x = 47,941.41

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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.