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Finding the Fourth Proportional to 75,000.60, 112,500.90 and 70,043.40

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Solution

The fourth proportional to 75,000.60, 112,500.90 and 70,043.40 is: 105,065.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,000.60 : 112,500.90 = 70,043.40 : x
  2. Step 2: Convert to fraction form
    75,000.60/112,500.90 = 70,043.40/x
  3. Step 3: Cross multiply
    75,000.60x = 112,500.90 × 70,043.40
  4. Step 4: Simplify right side
    75,000.60x = 7,879,945,539.06
  5. Step 5: Solve for x
    x = 7,879,945,539.06/75,000.60
  6. Step 6: Final answer
    x = 105,065.10

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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.