Home / 51,037.80-70,431.60-28,376.64

Finding the Fourth Proportional to 51,037.80, 70,431.60 and 28,376.64

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Solution

The fourth proportional to 51,037.80, 70,431.60 and 28,376.64 is: 39,159.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,037.80 : 70,431.60 = 28,376.64 : x
  2. Step 2: Convert to fraction form
    51,037.80/70,431.60 = 28,376.64/x
  3. Step 3: Cross multiply
    51,037.80x = 70,431.60 × 28,376.64
  4. Step 4: Simplify right side
    51,037.80x = 1,998,612,157.82
  5. Step 5: Solve for x
    x = 1,998,612,157.82/51,037.80
  6. Step 6: Final answer
    x = 39,159.45

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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.