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Finding the Fourth Proportional to 99,030.66, 136,679.78 and 58,766.63

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Solution

The fourth proportional to 99,030.66, 136,679.78 and 58,766.63 is: 81,108.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,030.66 : 136,679.78 = 58,766.63 : x
  2. Step 2: Convert to fraction form
    99,030.66/136,679.78 = 58,766.63/x
  3. Step 3: Cross multiply
    99,030.66x = 136,679.78 × 58,766.63
  4. Step 4: Simplify right side
    99,030.66x = 8,032,209,082.51
  5. Step 5: Solve for x
    x = 8,032,209,082.51/99,030.66
  6. Step 6: Final answer
    x = 81,108.31

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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.