Home / 90,985.28-136,492.56-38,402.60

Finding the Fourth Proportional to 90,985.28, 136,492.56 and 38,402.60

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Solution

The fourth proportional to 90,985.28, 136,492.56 and 38,402.60 is: 57,610.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,985.28 : 136,492.56 = 38,402.60 : x
  2. Step 2: Convert to fraction form
    90,985.28/136,492.56 = 38,402.60/x
  3. Step 3: Cross multiply
    90,985.28x = 136,492.56 × 38,402.60
  4. Step 4: Simplify right side
    90,985.28x = 5,241,669,184.66
  5. Step 5: Solve for x
    x = 5,241,669,184.66/90,985.28
  6. Step 6: Final answer
    x = 57,610.08

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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.