Home / 74,681.13-103,059.15-42,855.03

Finding the Fourth Proportional to 74,681.13, 103,059.15 and 42,855.03

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Solution

The fourth proportional to 74,681.13, 103,059.15 and 42,855.03 is: 59,139.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,681.13 : 103,059.15 = 42,855.03 : x
  2. Step 2: Convert to fraction form
    74,681.13/103,059.15 = 42,855.03/x
  3. Step 3: Cross multiply
    74,681.13x = 103,059.15 × 42,855.03
  4. Step 4: Simplify right side
    74,681.13x = 4,416,602,965.02
  5. Step 5: Solve for x
    x = 4,416,602,965.02/74,681.13
  6. Step 6: Final answer
    x = 59,139.48

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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.