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Finding the Fourth Proportional to 61,240.51, 91,860.73 and 19,124.20

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Solution

The fourth proportional to 61,240.51, 91,860.73 and 19,124.20 is: 28,686.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,240.51 : 91,860.73 = 19,124.20 : x
  2. Step 2: Convert to fraction form
    61,240.51/91,860.73 = 19,124.20/x
  3. Step 3: Cross multiply
    61,240.51x = 91,860.73 × 19,124.20
  4. Step 4: Simplify right side
    61,240.51x = 1,756,763,328.90
  5. Step 5: Solve for x
    x = 1,756,763,328.90/61,240.51
  6. Step 6: Final answer
    x = 28,686.29

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1.5x scale

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.