Home / 42,710.09-64,076.84-20,542.01

Finding the Fourth Proportional to 42,710.09, 64,076.84 and 20,542.01

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Solution

The fourth proportional to 42,710.09, 64,076.84 and 20,542.01 is: 30,818.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,710.09 : 64,076.84 = 20,542.01 : x
  2. Step 2: Convert to fraction form
    42,710.09/64,076.84 = 20,542.01/x
  3. Step 3: Cross multiply
    42,710.09x = 64,076.84 × 20,542.01
  4. Step 4: Simplify right side
    42,710.09x = 1,316,267,088.05
  5. Step 5: Solve for x
    x = 1,316,267,088.05/42,710.09
  6. Step 6: Final answer
    x = 30,818.64

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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.