Home / 78,116.62-107,801.02-42,306.67

Finding the Fourth Proportional to 78,116.62, 107,801.02 and 42,306.67

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Solution

The fourth proportional to 78,116.62, 107,801.02 and 42,306.67 is: 58,383.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,116.62 : 107,801.02 = 42,306.67 : x
  2. Step 2: Convert to fraction form
    78,116.62/107,801.02 = 42,306.67/x
  3. Step 3: Cross multiply
    78,116.62x = 107,801.02 × 42,306.67
  4. Step 4: Simplify right side
    78,116.62x = 4,560,701,803.53
  5. Step 5: Solve for x
    x = 4,560,701,803.53/78,116.62
  6. Step 6: Final answer
    x = 58,383.25

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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.