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Finding the Fourth Proportional to 37,038.40, 55,565.70 and 12,074.20

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Solution

The fourth proportional to 37,038.40, 55,565.70 and 12,074.20 is: 18,113.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,038.40 : 55,565.70 = 12,074.20 : x
  2. Step 2: Convert to fraction form
    37,038.40/55,565.70 = 12,074.20/x
  3. Step 3: Cross multiply
    37,038.40x = 55,565.70 × 12,074.20
  4. Step 4: Simplify right side
    37,038.40x = 670,911,374.94
  5. Step 5: Solve for x
    x = 670,911,374.94/37,038.40
  6. Step 6: Final answer
    x = 18,113.94

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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.