Home / 74,985.99-112,507.40-45,021.16

Finding the Fourth Proportional to 74,985.99, 112,507.40 and 45,021.16

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Solution

The fourth proportional to 74,985.99, 112,507.40 and 45,021.16 is: 67,548.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,985.99 : 112,507.40 = 45,021.16 : x
  2. Step 2: Convert to fraction form
    74,985.99/112,507.40 = 45,021.16/x
  3. Step 3: Cross multiply
    74,985.99x = 112,507.40 × 45,021.16
  4. Step 4: Simplify right side
    74,985.99x = 5,065,213,656.58
  5. Step 5: Solve for x
    x = 5,065,213,656.58/74,985.99
  6. Step 6: Final answer
    x = 67,548.80

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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.