Home / 85,583.07-128,389.59-29,429.01

Finding the Fourth Proportional to 85,583.07, 128,389.59 and 29,429.01

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Solution

The fourth proportional to 85,583.07, 128,389.59 and 29,429.01 is: 44,148.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,583.07 : 128,389.59 = 29,429.01 : x
  2. Step 2: Convert to fraction form
    85,583.07/128,389.59 = 29,429.01/x
  3. Step 3: Cross multiply
    85,583.07x = 128,389.59 × 29,429.01
  4. Step 4: Simplify right side
    85,583.07x = 3,778,378,528.01
  5. Step 5: Solve for x
    x = 3,778,378,528.01/85,583.07
  6. Step 6: Final answer
    x = 44,148.67

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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.