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Finding the Fourth Proportional to 82,756.40, 124,134.60 and 49,578.80

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Solution

The fourth proportional to 82,756.40, 124,134.60 and 49,578.80 is: 74,368.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,756.40 : 124,134.60 = 49,578.80 : x
  2. Step 2: Convert to fraction form
    82,756.40/124,134.60 = 49,578.80/x
  3. Step 3: Cross multiply
    82,756.40x = 124,134.60 × 49,578.80
  4. Step 4: Simplify right side
    82,756.40x = 6,154,444,506.48
  5. Step 5: Solve for x
    x = 6,154,444,506.48/82,756.40
  6. Step 6: Final answer
    x = 74,368.20

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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.