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Finding the Fourth Proportional to 61,621.46, 92,443.62 and 19,512.20

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Solution

The fourth proportional to 61,621.46, 92,443.62 and 19,512.20 is: 29,271.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,621.46 : 92,443.62 = 19,512.20 : x
  2. Step 2: Convert to fraction form
    61,621.46/92,443.62 = 19,512.20/x
  3. Step 3: Cross multiply
    61,621.46x = 92,443.62 × 19,512.20
  4. Step 4: Simplify right side
    61,621.46x = 1,803,778,402.16
  5. Step 5: Solve for x
    x = 1,803,778,402.16/61,621.46
  6. Step 6: Final answer
    x = 29,271.92

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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.