Home / 85,907.07-128,722.10-46,482.75

Finding the Fourth Proportional to 85,907.07, 128,722.10 and 46,482.75

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Solution

The fourth proportional to 85,907.07, 128,722.10 and 46,482.75 is: 69,649.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,907.07 : 128,722.10 = 46,482.75 : x
  2. Step 2: Convert to fraction form
    85,907.07/128,722.10 = 46,482.75/x
  3. Step 3: Cross multiply
    85,907.07x = 128,722.10 × 46,482.75
  4. Step 4: Simplify right side
    85,907.07x = 5,983,356,961.36
  5. Step 5: Solve for x
    x = 5,983,356,961.36/85,907.07
  6. Step 6: Final answer
    x = 69,649.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.