Home / 61,115.40-91,254.99-54,749.19

Finding the Fourth Proportional to 61,115.40, 91,254.99 and 54,749.19

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Solution

The fourth proportional to 61,115.40, 91,254.99 and 54,749.19 is: 81,749.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,115.40 : 91,254.99 = 54,749.19 : x
  2. Step 2: Convert to fraction form
    61,115.40/91,254.99 = 54,749.19/x
  3. Step 3: Cross multiply
    61,115.40x = 91,254.99 × 54,749.19
  4. Step 4: Simplify right side
    61,115.40x = 4,996,136,785.96
  5. Step 5: Solve for x
    x = 4,996,136,785.96/61,115.40
  6. Step 6: Final answer
    x = 81,749.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.