Home / 42,874.74-64,353.45-20,703.66

Finding the Fourth Proportional to 42,874.74, 64,353.45 and 20,703.66

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Solution

The fourth proportional to 42,874.74, 64,353.45 and 20,703.66 is: 31,075.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,874.74 : 64,353.45 = 20,703.66 : x
  2. Step 2: Convert to fraction form
    42,874.74/64,353.45 = 20,703.66/x
  3. Step 3: Cross multiply
    42,874.74x = 64,353.45 × 20,703.66
  4. Step 4: Simplify right side
    42,874.74x = 1,332,351,948.63
  5. Step 5: Solve for x
    x = 1,332,351,948.63/42,874.74
  6. Step 6: Final answer
    x = 31,075.45

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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.