Home / 78,415.28-108,209.60-44,423.10

Finding the Fourth Proportional to 78,415.28, 108,209.60 and 44,423.10

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Solution

The fourth proportional to 78,415.28, 108,209.60 and 44,423.10 is: 61,301.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,415.28 : 108,209.60 = 44,423.10 : x
  2. Step 2: Convert to fraction form
    78,415.28/108,209.60 = 44,423.10/x
  3. Step 3: Cross multiply
    78,415.28x = 108,209.60 × 44,423.10
  4. Step 4: Simplify right side
    78,415.28x = 4,807,005,881.76
  5. Step 5: Solve for x
    x = 4,807,005,881.76/78,415.28
  6. Step 6: Final answer
    x = 61,301.90

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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.