Home / 42,665.80-63,998.70-38,437.60

Finding the Fourth Proportional to 42,665.80, 63,998.70 and 38,437.60

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Solution

The fourth proportional to 42,665.80, 63,998.70 and 38,437.60 is: 57,656.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,665.80 : 63,998.70 = 38,437.60 : x
  2. Step 2: Convert to fraction form
    42,665.80/63,998.70 = 38,437.60/x
  3. Step 3: Cross multiply
    42,665.80x = 63,998.70 × 38,437.60
  4. Step 4: Simplify right side
    42,665.80x = 2,459,956,431.12
  5. Step 5: Solve for x
    x = 2,459,956,431.12/42,665.80
  6. Step 6: Final answer
    x = 57,656.40

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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.