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Finding the Fourth Proportional to 70,780.80, 106,329.60 and 59,116.80

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Solution

The fourth proportional to 70,780.80, 106,329.60 and 59,116.80 is: 88,807.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,780.80 : 106,329.60 = 59,116.80 : x
  2. Step 2: Convert to fraction form
    70,780.80/106,329.60 = 59,116.80/x
  3. Step 3: Cross multiply
    70,780.80x = 106,329.60 × 59,116.80
  4. Step 4: Simplify right side
    70,780.80x = 6,285,865,697.28
  5. Step 5: Solve for x
    x = 6,285,865,697.28/70,780.80
  6. Step 6: Final answer
    x = 88,807.50

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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.