Home / 42,685.60-64,028.40-40,266.40

Finding the Fourth Proportional to 42,685.60, 64,028.40 and 40,266.40

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Solution

The fourth proportional to 42,685.60, 64,028.40 and 40,266.40 is: 60,399.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,685.60 : 64,028.40 = 40,266.40 : x
  2. Step 2: Convert to fraction form
    42,685.60/64,028.40 = 40,266.40/x
  3. Step 3: Cross multiply
    42,685.60x = 64,028.40 × 40,266.40
  4. Step 4: Simplify right side
    42,685.60x = 2,578,193,165.76
  5. Step 5: Solve for x
    x = 2,578,193,165.76/42,685.60
  6. Step 6: Final answer
    x = 60,399.60

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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.