Home / 85,735.09-128,799.74-60,492.70

Finding the Fourth Proportional to 85,735.09, 128,799.74 and 60,492.70

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Solution

The fourth proportional to 85,735.09, 128,799.74 and 60,492.70 is: 90,878.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,735.09 : 128,799.74 = 60,492.70 : x
  2. Step 2: Convert to fraction form
    85,735.09/128,799.74 = 60,492.70/x
  3. Step 3: Cross multiply
    85,735.09x = 128,799.74 × 60,492.70
  4. Step 4: Simplify right side
    85,735.09x = 7,791,444,031.90
  5. Step 5: Solve for x
    x = 7,791,444,031.90/85,735.09
  6. Step 6: Final answer
    x = 90,878.12

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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.