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Finding the Fourth Proportional to 61,345.20, 92,017.76 and 19,792.20

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Solution

The fourth proportional to 61,345.20, 92,017.76 and 19,792.20 is: 29,688.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,345.20 : 92,017.76 = 19,792.20 : x
  2. Step 2: Convert to fraction form
    61,345.20/92,017.76 = 19,792.20/x
  3. Step 3: Cross multiply
    61,345.20x = 92,017.76 × 19,792.20
  4. Step 4: Simplify right side
    61,345.20x = 1,821,233,909.47
  5. Step 5: Solve for x
    x = 1,821,233,909.47/61,345.20
  6. Step 6: Final answer
    x = 29,688.29

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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.