Home / 66,492.90-99,738.54-19,109.10

Finding the Fourth Proportional to 66,492.90, 99,738.54 and 19,109.10

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Solution

The fourth proportional to 66,492.90, 99,738.54 and 19,109.10 is: 28,663.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,492.90 : 99,738.54 = 19,109.10 : x
  2. Step 2: Convert to fraction form
    66,492.90/99,738.54 = 19,109.10/x
  3. Step 3: Cross multiply
    66,492.90x = 99,738.54 × 19,109.10
  4. Step 4: Simplify right side
    66,492.90x = 1,905,913,734.71
  5. Step 5: Solve for x
    x = 1,905,913,734.71/66,492.90
  6. Step 6: Final answer
    x = 28,663.42

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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.