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Finding the Fourth Proportional to 53,178.60, 79,886.70 and 44,430.60

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Solution

The fourth proportional to 53,178.60, 79,886.70 and 44,430.60 is: 66,745.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,178.60 : 79,886.70 = 44,430.60 : x
  2. Step 2: Convert to fraction form
    53,178.60/79,886.70 = 44,430.60/x
  3. Step 3: Cross multiply
    53,178.60x = 79,886.70 × 44,430.60
  4. Step 4: Simplify right side
    53,178.60x = 3,549,414,013.02
  5. Step 5: Solve for x
    x = 3,549,414,013.02/53,178.60
  6. Step 6: Final answer
    x = 66,745.16

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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.