Home / 74,398.64-111,549.08-42,378.80

Finding the Fourth Proportional to 74,398.64, 111,549.08 and 42,378.80

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Solution

The fourth proportional to 74,398.64, 111,549.08 and 42,378.80 is: 63,540.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,398.64 : 111,549.08 = 42,378.80 : x
  2. Step 2: Convert to fraction form
    74,398.64/111,549.08 = 42,378.80/x
  3. Step 3: Cross multiply
    74,398.64x = 111,549.08 × 42,378.80
  4. Step 4: Simplify right side
    74,398.64x = 4,727,315,699.71
  5. Step 5: Solve for x
    x = 4,727,315,699.71/74,398.64
  6. Step 6: Final answer
    x = 63,540.36

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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.