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Finding the Fourth Proportional to 74,741.60, 112,155.60 and 27,999.20

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Solution

The fourth proportional to 74,741.60, 112,155.60 and 27,999.20 is: 42,014.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,741.60 : 112,155.60 = 27,999.20 : x
  2. Step 2: Convert to fraction form
    74,741.60/112,155.60 = 27,999.20/x
  3. Step 3: Cross multiply
    74,741.60x = 112,155.60 × 27,999.20
  4. Step 4: Simplify right side
    74,741.60x = 3,140,267,075.52
  5. Step 5: Solve for x
    x = 3,140,267,075.52/74,741.60
  6. Step 6: Final answer
    x = 42,014.98

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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.