Home / 78,425.74-108,228.20-42,615.75

Finding the Fourth Proportional to 78,425.74, 108,228.20 and 42,615.75

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Solution

The fourth proportional to 78,425.74, 108,228.20 and 42,615.75 is: 58,810.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,425.74 : 108,228.20 = 42,615.75 : x
  2. Step 2: Convert to fraction form
    78,425.74/108,228.20 = 42,615.75/x
  3. Step 3: Cross multiply
    78,425.74x = 108,228.20 × 42,615.75
  4. Step 4: Simplify right side
    78,425.74x = 4,612,225,701.07
  5. Step 5: Solve for x
    x = 4,612,225,701.07/78,425.74
  6. Step 6: Final answer
    x = 58,810.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.