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Finding the Fourth Proportional to 48,019.70, 72,029.55 and 12,959.30

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Solution

The fourth proportional to 48,019.70, 72,029.55 and 12,959.30 is: 19,438.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,019.70 : 72,029.55 = 12,959.30 : x
  2. Step 2: Convert to fraction form
    48,019.70/72,029.55 = 12,959.30/x
  3. Step 3: Cross multiply
    48,019.70x = 72,029.55 × 12,959.30
  4. Step 4: Simplify right side
    48,019.70x = 933,452,547.32
  5. Step 5: Solve for x
    x = 933,452,547.32/48,019.70
  6. Step 6: Final answer
    x = 19,438.95

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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.