Home / 78,215.60-107,903.64-52,343.12

Finding the Fourth Proportional to 78,215.60, 107,903.64 and 52,343.12

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Solution

The fourth proportional to 78,215.60, 107,903.64 and 52,343.12 is: 72,210.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,215.60 : 107,903.64 = 52,343.12 : x
  2. Step 2: Convert to fraction form
    78,215.60/107,903.64 = 52,343.12/x
  3. Step 3: Cross multiply
    78,215.60x = 107,903.64 × 52,343.12
  4. Step 4: Simplify right side
    78,215.60x = 5,648,013,176.96
  5. Step 5: Solve for x
    x = 5,648,013,176.96/78,215.60
  6. Step 6: Final answer
    x = 72,210.83

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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.