Home / 78,862.43-118,195.20-39,430.82

Finding the Fourth Proportional to 78,862.43, 118,195.20 and 39,430.82

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Solution

The fourth proportional to 78,862.43, 118,195.20 and 39,430.82 is: 59,097.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,862.43 : 118,195.20 = 39,430.82 : x
  2. Step 2: Convert to fraction form
    78,862.43/118,195.20 = 39,430.82/x
  3. Step 3: Cross multiply
    78,862.43x = 118,195.20 × 39,430.82
  4. Step 4: Simplify right side
    78,862.43x = 4,660,533,951.55
  5. Step 5: Solve for x
    x = 4,660,533,951.55/78,862.43
  6. Step 6: Final answer
    x = 59,097.01

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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.