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Finding the Fourth Proportional to 52,097.40, 78,030.90 and 40,318.20

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Solution

The fourth proportional to 52,097.40, 78,030.90 and 40,318.20 is: 60,388.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,097.40 : 78,030.90 = 40,318.20 : x
  2. Step 2: Convert to fraction form
    52,097.40/78,030.90 = 40,318.20/x
  3. Step 3: Cross multiply
    52,097.40x = 78,030.90 × 40,318.20
  4. Step 4: Simplify right side
    52,097.40x = 3,146,065,432.38
  5. Step 5: Solve for x
    x = 3,146,065,432.38/52,097.40
  6. Step 6: Final answer
    x = 60,388.15

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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.