Home / 85,645.60-118,303.88-65,748.35

Finding the Fourth Proportional to 85,645.60, 118,303.88 and 65,748.35

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Solution

The fourth proportional to 85,645.60, 118,303.88 and 65,748.35 is: 90,819.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,645.60 : 118,303.88 = 65,748.35 : x
  2. Step 2: Convert to fraction form
    85,645.60/118,303.88 = 65,748.35/x
  3. Step 3: Cross multiply
    85,645.60x = 118,303.88 × 65,748.35
  4. Step 4: Simplify right side
    85,645.60x = 7,778,284,875.62
  5. Step 5: Solve for x
    x = 7,778,284,875.62/85,645.60
  6. Step 6: Final answer
    x = 90,819.44

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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.