Home / 105,421.82-145,482.62-57,675.96

Finding the Fourth Proportional to 105,421.82, 145,482.62 and 57,675.96

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Solution

The fourth proportional to 105,421.82, 145,482.62 and 57,675.96 is: 79,593.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,421.82 : 145,482.62 = 57,675.96 : x
  2. Step 2: Convert to fraction form
    105,421.82/145,482.62 = 57,675.96/x
  3. Step 3: Cross multiply
    105,421.82x = 145,482.62 × 57,675.96
  4. Step 4: Simplify right side
    105,421.82x = 8,390,849,483.44
  5. Step 5: Solve for x
    x = 8,390,849,483.44/105,421.82
  6. Step 6: Final answer
    x = 79,593.10

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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.