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Finding the Fourth Proportional to 88,709.16, 122,210.68 and 61,803

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Solution

The fourth proportional to 88,709.16, 122,210.68 and 61,803 is: 85,143.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,709.16 : 122,210.68 = 61,803 : x
  2. Step 2: Convert to fraction form
    88,709.16/122,210.68 = 61,803/x
  3. Step 3: Cross multiply
    88,709.16x = 122,210.68 × 61,803
  4. Step 4: Simplify right side
    88,709.16x = 7,552,986,656.04
  5. Step 5: Solve for x
    x = 7,552,986,656.04/88,709.16
  6. Step 6: Final answer
    x = 85,143.26

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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.