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Finding the Fourth Proportional to 65,555.20, 90,460.80 and 37,254.40

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Solution

The fourth proportional to 65,555.20, 90,460.80 and 37,254.40 is: 51,408.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,555.20 : 90,460.80 = 37,254.40 : x
  2. Step 2: Convert to fraction form
    65,555.20/90,460.80 = 37,254.40/x
  3. Step 3: Cross multiply
    65,555.20x = 90,460.80 × 37,254.40
  4. Step 4: Simplify right side
    65,555.20x = 3,370,062,827.52
  5. Step 5: Solve for x
    x = 3,370,062,827.52/65,555.20
  6. Step 6: Final answer
    x = 51,408.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.