Home / 74,438.09-102,729.77-42,172.45

Finding the Fourth Proportional to 74,438.09, 102,729.77 and 42,172.45

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Solution

The fourth proportional to 74,438.09, 102,729.77 and 42,172.45 is: 58,200.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,438.09 : 102,729.77 = 42,172.45 : x
  2. Step 2: Convert to fraction form
    74,438.09/102,729.77 = 42,172.45/x
  3. Step 3: Cross multiply
    74,438.09x = 102,729.77 × 42,172.45
  4. Step 4: Simplify right side
    74,438.09x = 4,332,365,779.30
  5. Step 5: Solve for x
    x = 4,332,365,779.30/74,438.09
  6. Step 6: Final answer
    x = 58,200.93

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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.