Home / 81,088.32-121,663.36-34,328.64

Finding the Fourth Proportional to 81,088.32, 121,663.36 and 34,328.64

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Solution

The fourth proportional to 81,088.32, 121,663.36 and 34,328.64 is: 51,506.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,088.32 : 121,663.36 = 34,328.64 : x
  2. Step 2: Convert to fraction form
    81,088.32/121,663.36 = 34,328.64/x
  3. Step 3: Cross multiply
    81,088.32x = 121,663.36 × 34,328.64
  4. Step 4: Simplify right side
    81,088.32x = 4,176,537,686.63
  5. Step 5: Solve for x
    x = 4,176,537,686.63/81,088.32
  6. Step 6: Final answer
    x = 51,506.03

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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.