Home / 78,838.24-118,287.60-32,130.40

Finding the Fourth Proportional to 78,838.24, 118,287.60 and 32,130.40

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Solution

The fourth proportional to 78,838.24, 118,287.60 and 32,130.40 is: 48,207.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,838.24 : 118,287.60 = 32,130.40 : x
  2. Step 2: Convert to fraction form
    78,838.24/118,287.60 = 32,130.40/x
  3. Step 3: Cross multiply
    78,838.24x = 118,287.60 × 32,130.40
  4. Step 4: Simplify right side
    78,838.24x = 3,800,627,903.04
  5. Step 5: Solve for x
    x = 3,800,627,903.04/78,838.24
  6. Step 6: Final answer
    x = 48,207.92

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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.