Home / 42,678.16-63,965.40-30,201.84

Finding the Fourth Proportional to 42,678.16, 63,965.40 and 30,201.84

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Solution

The fourth proportional to 42,678.16, 63,965.40 and 30,201.84 is: 45,266.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,678.16 : 63,965.40 = 30,201.84 : x
  2. Step 2: Convert to fraction form
    42,678.16/63,965.40 = 30,201.84/x
  3. Step 3: Cross multiply
    42,678.16x = 63,965.40 × 30,201.84
  4. Step 4: Simplify right side
    42,678.16x = 1,931,872,776.34
  5. Step 5: Solve for x
    x = 1,931,872,776.34/42,678.16
  6. Step 6: Final answer
    x = 45,266.07

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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.