Home / 42,799.20-64,275.60-31,125.60

Finding the Fourth Proportional to 42,799.20, 64,275.60 and 31,125.60

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Solution

The fourth proportional to 42,799.20, 64,275.60 and 31,125.60 is: 46,744.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,799.20 : 64,275.60 = 31,125.60 : x
  2. Step 2: Convert to fraction form
    42,799.20/64,275.60 = 31,125.60/x
  3. Step 3: Cross multiply
    42,799.20x = 64,275.60 × 31,125.60
  4. Step 4: Simplify right side
    42,799.20x = 2,000,616,615.36
  5. Step 5: Solve for x
    x = 2,000,616,615.36/42,799.20
  6. Step 6: Final answer
    x = 46,744.25

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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.