Home / 75,128.03-103,699.74-43,318.10

Finding the Fourth Proportional to 75,128.03, 103,699.74 and 43,318.10

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Solution

The fourth proportional to 75,128.03, 103,699.74 and 43,318.10 is: 59,792.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,128.03 : 103,699.74 = 43,318.10 : x
  2. Step 2: Convert to fraction form
    75,128.03/103,699.74 = 43,318.10/x
  3. Step 3: Cross multiply
    75,128.03x = 103,699.74 × 43,318.10
  4. Step 4: Simplify right side
    75,128.03x = 4,492,075,707.29
  5. Step 5: Solve for x
    x = 4,492,075,707.29/75,128.03
  6. Step 6: Final answer
    x = 59,792.27

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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.