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Finding the Fourth Proportional to 98,526.78, 135,966.90 and 53,814.78

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Solution

The fourth proportional to 98,526.78, 135,966.90 and 53,814.78 is: 74,264.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,526.78 : 135,966.90 = 53,814.78 : x
  2. Step 2: Convert to fraction form
    98,526.78/135,966.90 = 53,814.78/x
  3. Step 3: Cross multiply
    98,526.78x = 135,966.90 × 53,814.78
  4. Step 4: Simplify right side
    98,526.78x = 7,317,028,810.78
  5. Step 5: Solve for x
    x = 7,317,028,810.78/98,526.78
  6. Step 6: Final answer
    x = 74,264.37

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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.