Home / 78,420.28-108,216.50-44,428.10

Finding the Fourth Proportional to 78,420.28, 108,216.50 and 44,428.10

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Solution

The fourth proportional to 78,420.28, 108,216.50 and 44,428.10 is: 61,308.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,420.28 : 108,216.50 = 44,428.10 : x
  2. Step 2: Convert to fraction form
    78,420.28/108,216.50 = 44,428.10/x
  3. Step 3: Cross multiply
    78,420.28x = 108,216.50 × 44,428.10
  4. Step 4: Simplify right side
    78,420.28x = 4,807,853,483.65
  5. Step 5: Solve for x
    x = 4,807,853,483.65/78,420.28
  6. Step 6: Final answer
    x = 61,308.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.