Home / 74,920.04-103,389.72-40,929

Finding the Fourth Proportional to 74,920.04, 103,389.72 and 40,929

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Solution

The fourth proportional to 74,920.04, 103,389.72 and 40,929 is: 56,482.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,920.04 : 103,389.72 = 40,929 : x
  2. Step 2: Convert to fraction form
    74,920.04/103,389.72 = 40,929/x
  3. Step 3: Cross multiply
    74,920.04x = 103,389.72 × 40,929
  4. Step 4: Simplify right side
    74,920.04x = 4,231,637,849.88
  5. Step 5: Solve for x
    x = 4,231,637,849.88/74,920.04
  6. Step 6: Final answer
    x = 56,482.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.