Home / 42,690.42-64,054.08-16,389.05

Finding the Fourth Proportional to 42,690.42, 64,054.08 and 16,389.05

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Solution

The fourth proportional to 42,690.42, 64,054.08 and 16,389.05 is: 24,590.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,690.42 : 64,054.08 = 16,389.05 : x
  2. Step 2: Convert to fraction form
    42,690.42/64,054.08 = 16,389.05/x
  3. Step 3: Cross multiply
    42,690.42x = 64,054.08 × 16,389.05
  4. Step 4: Simplify right side
    42,690.42x = 1,049,785,199.55
  5. Step 5: Solve for x
    x = 1,049,785,199.55/42,690.42
  6. Step 6: Final answer
    x = 24,590.65

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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.