Home / 90,624.20-135,802.65-65,716.70

Finding the Fourth Proportional to 90,624.20, 135,802.65 and 65,716.70

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Solution

The fourth proportional to 90,624.20, 135,802.65 and 65,716.70 is: 98,478.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,624.20 : 135,802.65 = 65,716.70 : x
  2. Step 2: Convert to fraction form
    90,624.20/135,802.65 = 65,716.70/x
  3. Step 3: Cross multiply
    90,624.20x = 135,802.65 × 65,716.70
  4. Step 4: Simplify right side
    90,624.20x = 8,924,502,009.26
  5. Step 5: Solve for x
    x = 8,924,502,009.26/90,624.20
  6. Step 6: Final answer
    x = 98,478.13

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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.