Home / 74,564.12-102,900.91-42,739.02

Finding the Fourth Proportional to 74,564.12, 102,900.91 and 42,739.02

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Solution

The fourth proportional to 74,564.12, 102,900.91 and 42,739.02 is: 58,981.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,564.12 : 102,900.91 = 42,739.02 : x
  2. Step 2: Convert to fraction form
    74,564.12/102,900.91 = 42,739.02/x
  3. Step 3: Cross multiply
    74,564.12x = 102,900.91 × 42,739.02
  4. Step 4: Simplify right side
    74,564.12x = 4,397,884,050.51
  5. Step 5: Solve for x
    x = 4,397,884,050.51/74,564.12
  6. Step 6: Final answer
    x = 58,981.24

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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.