Home / 78,332.12-117,515.46-25,739.36

Finding the Fourth Proportional to 78,332.12, 117,515.46 and 25,739.36

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Solution

The fourth proportional to 78,332.12, 117,515.46 and 25,739.36 is: 38,614.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,332.12 : 117,515.46 = 25,739.36 : x
  2. Step 2: Convert to fraction form
    78,332.12/117,515.46 = 25,739.36/x
  3. Step 3: Cross multiply
    78,332.12x = 117,515.46 × 25,739.36
  4. Step 4: Simplify right side
    78,332.12x = 3,024,772,730.51
  5. Step 5: Solve for x
    x = 3,024,772,730.51/78,332.12
  6. Step 6: Final answer
    x = 38,614.72

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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.