Home / 74,147.13-102,323.03-42,315.34

Finding the Fourth Proportional to 74,147.13, 102,323.03 and 42,315.34

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Solution

The fourth proportional to 74,147.13, 102,323.03 and 42,315.34 is: 58,395.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,147.13 : 102,323.03 = 42,315.34 : x
  2. Step 2: Convert to fraction form
    74,147.13/102,323.03 = 42,315.34/x
  3. Step 3: Cross multiply
    74,147.13x = 102,323.03 × 42,315.34
  4. Step 4: Simplify right side
    74,147.13x = 4,329,833,804.28
  5. Step 5: Solve for x
    x = 4,329,833,804.28/74,147.13
  6. Step 6: Final answer
    x = 58,395.16

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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.