Home / 42,426.40-63,639.60-42,167.20

Finding the Fourth Proportional to 42,426.40, 63,639.60 and 42,167.20

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Solution

The fourth proportional to 42,426.40, 63,639.60 and 42,167.20 is: 63,250.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,426.40 : 63,639.60 = 42,167.20 : x
  2. Step 2: Convert to fraction form
    42,426.40/63,639.60 = 42,167.20/x
  3. Step 3: Cross multiply
    42,426.40x = 63,639.60 × 42,167.20
  4. Step 4: Simplify right side
    42,426.40x = 2,683,503,741.12
  5. Step 5: Solve for x
    x = 2,683,503,741.12/42,426.40
  6. Step 6: Final answer
    x = 63,250.80

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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.