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Finding the Fourth Proportional to 70,317.18, 105,492.69 and 28,764.30

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Solution

The fourth proportional to 70,317.18, 105,492.69 and 28,764.30 is: 43,153.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,317.18 : 105,492.69 = 28,764.30 : x
  2. Step 2: Convert to fraction form
    70,317.18/105,492.69 = 28,764.30/x
  3. Step 3: Cross multiply
    70,317.18x = 105,492.69 × 28,764.30
  4. Step 4: Simplify right side
    70,317.18x = 3,034,423,382.97
  5. Step 5: Solve for x
    x = 3,034,423,382.97/70,317.18
  6. Step 6: Final answer
    x = 43,153.37

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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.