Home / 74,029.02-102,139.83-42,186.30

Finding the Fourth Proportional to 74,029.02, 102,139.83 and 42,186.30

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Solution

The fourth proportional to 74,029.02, 102,139.83 and 42,186.30 is: 58,205.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,029.02 : 102,139.83 = 42,186.30 : x
  2. Step 2: Convert to fraction form
    74,029.02/102,139.83 = 42,186.30/x
  3. Step 3: Cross multiply
    74,029.02x = 102,139.83 × 42,186.30
  4. Step 4: Simplify right side
    74,029.02x = 4,308,901,510.33
  5. Step 5: Solve for x
    x = 4,308,901,510.33/74,029.02
  6. Step 6: Final answer
    x = 58,205.57

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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.